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Document and Entity Information - USD ($)	12 Months Ended
Document and Entity Information - USD ($)	Dec. 31, 2012	Mar. 05, 2013	Jun. 30, 2012
Document And Entity Information
Entity Registrant Name	MIDDLESEX WATER CO
Entity Central Index Key	0000066004
Document Type	10-K
Document Period End Date	Dec. 31, 2012
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Is Entity a Well-known Seasoned Issuer?	No
Is Entity a Voluntary Filer?	No
Is Entity's Reporting Status Current?	Yes
Entity Filer Category	Accelerated Filer
Entity Public Float			$ 298,875,149
Entity Closing Market Price (per share)			18.58
Entity Common Stock, Shares Outstanding		15,815,595
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2012

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011
UTILITY PLANT:
Water Production	$ 129,840	$ 127,827
Transmission and Distribution	343,074	326,629
General	54,830	47,519
Construction Work in Progress	7,834	12,575
TOTAL	535,578	514,550
Less Accumulated Depreciation	100,360	92,351
UTILITY PLANT - NET	435,218	422,199
CURRENT ASSETS:
Cash and Cash Equivalents	3,025	3,106
Accounts Receivable, net	12,447	11,280
Unbilled Revenues	5,483	4,842
Materials and Supplies (at average cost)	1,403	2,023
Prepayments	2,255	1,622
TOTAL CURRENT ASSETS	24,613	22,873
DEFERRED CHARGES AND OTHER ASSETS:
Unamortized Debt Expense	3,606	2,611
Preliminary Survey and Investigation Charges	5,117	5,179
Regulatory Assets	72,831	67,302
Operations Contracts, Developer and Other Receivables	1,692	5,300
Restricted Cash	9,019	3,260
Non-utility Assets - Net	9,182	8,182
Other	448	630
TOTAL DEFERRED CHARGES AND OTHER ASSETS	101,895	92,464
TOTAL ASSETS	561,726	537,536
CAPITALIZATION:
Common Stock, No Par Value	143,572	141,432
Retained Earnings	38,060	35,549
TOTAL COMMON EQUITY	181,632	176,981
Preferred Stock	3,353	3,353
Long-term Debt	131,467	132,167
TOTAL CAPITALIZATION	316,452	312,501
CURRENT LIABILITIES:
Current Portion of Long-term Debt	11,130	4,569
Notes Payable	27,950	24,250
Accounts Payable	3,808	5,706
Accrued Taxes	9,266	7,847
Accrued Interest	955	1,628
Unearned Revenues and Advanced Service Fees	756	734
Other	2,067	1,953
TOTAL CURRENT LIABILITIES	55,932	46,687
COMMITMENTS AND CONTINGENT LIABILITIES (Note 4)
DEFERRED CREDITS AND OTHER LIABILITIES:
Customer Advances for Construction	21,990	21,944
Accumulated Deferred Investment Tax Credits	1,068	1,146
Accumulated Deferred Income Taxes	41,776	37,022
Employee Benefit Plans	54,768	51,006
Regulatory Liability - Cost of Utility Plant Removal	8,811	8,029
Other	973	995
TOTAL DEFERRED CREDITS AND OTHER LIABILITIES	129,386	120,142
CONTRIBUTIONS IN AID OF CONSTRUCTION	59,956	58,206
TOTAL CAPITALIZATION AND LIABILITIES	$ 561,726	$ 537,536

CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Statement [Abstract]
Operating Revenues	$ 110,379	$ 102,069	$ 102,735
Operating Expenses:
Operations and Maintenance	60,458	56,634	55,481
Depreciation	10,409	9,746	9,244
Other Taxes	11,865	11,488	11,413
Total Operating Expenses	82,732	77,868	76,138
Operating Income	27,647	24,201	26,597
Other Income (Expense):
Allowance for Funds Used During Construction	484	821	970
Other Income	517	1,523	912
Other Expense	(144)	(195)	(438)
Total Other Income, net	857	2,149	1,444
Interest Charges	6,725	6,376	6,925
Income before Income Taxes	21,779	19,974	21,116
Income Taxes	7,383	6,527	6,786
Net Income	14,396	13,447	14,330
Preferred Stock Dividend Requirements	206	206	207
Earnings Applicable to Common Stock	$ 14,190	$ 13,241	$ 14,123
Earnings per share of Common Stock:
Basic	$ 0.90	$ 0.85	$ 0.96
Diluted	$ 0.90	$ 0.84	$ 0.96
Average Number of Common Shares Outstanding:
Basic	15,733,000	15,615,000	14,654,000
Diluted	15,995,000	15,877,000	14,916,000
Cash Dividends Paid per Common Share	$ 0.743	$ 0.733	$ 0.723

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 14,396	$ 13,447	$ 14,330
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Depreciation and Amortization	11,232	10,432	9,958
Provision for Deferred Income Taxes and ITC	3,959	2,098	630
Equity Portion of AFUDC	(309)	(523)	(611)
Cash Surrender Value of Life Insurance	(151)	(92)	104
Stock Compensation Expense	553	394	323
Changes in Assets and Liabilities:
Accounts Receivable	2,441	(28)	(2,222)
Unbilled Revenues	(641)	(90)	(328)
Materials & Supplies	620	173	(578)
Prepayments	(633)	(221)	(292)
Accounts Payable	(1,898)	(697)	2,055
Accrued Taxes	1,419	(905)	3,066
Accrued Interest	(673)	30	(263)
Employee Benefit Plans	270	(1,591)	(1,904)
Unearned Revenue & Advanced Service Fees	22	(130)	3
Other Assets and Liabilities	(1,035)	539	1,294
NET CASH PROVIDED BY OPERATING ACTIVITIES	29,572	22,836	25,565
CASH FLOWS FROM INVESTING ACTIVITIES:
Utility Plant Expenditures, Including AFUDC of $175 in 2012, $299 in 2011 and $359 in 2010	(21,578)	(23,562)	(29,604)
Restricted Cash	464	3,796	(1,790)
Investment in Joint Venture	(1,200)	(300)
NET CASH USED IN INVESTING ACTIVITIES	(22,314)	(20,066)	(31,394)
CASH FLOWS FROM FINANCING ACTIVITIES:
Redemption of Long-term Debt	(56,725)	(4,427)	(4,314)
Proceeds from Issuance of Long-term Debt	60,350	3,447	13,970
Net Short-term Bank Borrowings	3,700	7,250	(25,850)
Deferred Debt Issuance Expense	(1,160)	(37)	(25)
Premium on Long-term Debt	2,236
Restricted Cash	(6,223)
Common Stock Issuance Expense			(133)
Repurchase of Preferred Stock		(9)	(11)
Proceeds from Issuance of Common Stock	1,587	1,504	29,845
Payment of Common Dividends	(11,679)	(11,437)	(10,510)
Payment of Preferred Dividends	(206)	(206)	(207)
Construction Advances and Contributions-Net	781	1,798	1,239
NET CASH USED IN FINANCING ACTIVITIES	(7,339)	(2,117)	4,004
NET CHANGES IN CASH AND CASH EQUIVALENTS	(81)	653	(1,825)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	3,106	2,453	4,278
CASH AND CASH EQUIVALENTS AT END OF PERIOD	3,025	3,106	2,453
SUPPLEMENTAL DISCLOSURE OF NON-CASH ACTIVITY:
Utility Plant received as Construction Advances and Contributions	1,015	7,393	2,043
Long-term Debt Deobligation	255	560
Cash Paid During the Year for:
Interest	7,537	6,336	7,155
Interest Capitalized	175	299	359
Income Taxes	$ 2,349	$ 4,733	$ 4,617

CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011
Consolidated Statements Of Cash Flows Parenthetical
Allowance for Funds Used During Construction	$ 175	$ 299

CONSOLIDATED STATEMENTS OF CAPITAL STOCK AND LONG-TERM DEBT - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011
Common Stock, No Par Value; Shares Authorized- 40,000; Shares Outstanding- 2012 - 15,752, 2011 - 15,682	$ 143,572	$ 141,432
Retained Earnings	38,060	35,549
TOTAL COMMON EQUITY	181,632	176,981
TOTAL PREFERRED STOCK	3,353	3,353
Long-term Debt:
8.05%, Amortizing Secured Note, due December 20, 2021	2,169	2,319
6.25%, Amortizing Secured Note, due May 19, 2028	6,475	6,895
6.44%, Amortizing Secured Note, due August 25, 2030	4,947	5,227
6.46%, Amortizing Secured Note, due September 19, 2031	5,227	5,507
4.22%, State Revolving Trust Note, due December 31, 2022	506	546
3.30% to 3.60%, State Revolving Trust Note, due May 1, 2025	3,413	3,623
3.49%, State Revolving Trust Note, due January 25, 2027	602	633
4.03%, State Revolving Trust Note, due December 1, 2026	784	825
4.00% to 5.00%, State Revolving Trust Note, due August 1, 2021	388	434
0.00%, State Revolving Fund Note, due August 1, 2021	320	359
3.64%, State Revolving Trust Note, due July 1, 2028	347	364
3.64%, State Revolving Trust Note, due January 1, 2028	116	122
3.45%, State Revolving Trust Note, due August 1, 2031	397	39
6.59%, Amortizing Secured Note, due April 20, 2029	5,697	6,046
7.05%, Amortizing Secured Note, due January 20, 2030	4,271	4,521
5.69%, Amortizing Secured Note, due January 20, 2030	8,761	9,273
3.75%, State Revolving Trust Note, due July 1, 2031	2,615	2,021
3.75%, State Revolving Trust Note, due November 30, 2030	1,388	1,404
First Mortgage Bonds:
5.20%, Series S, due October 1, 2022		12,000
5.25%, Series T, due October 1, 2023		6,500
5.25%, Series V, due February 1, 2029		10,000
5.35%, Series W, due February 1, 2038		23,000
0.00%, Series X, due September 1, 2018	322	375
4.25% to 4.63%, Series Y, due September 1, 2018	355	410
0.00%, Series Z, due September 1, 2019	782	894
5.25% to 5.75%, Series AA, due September 1, 2019	955	1,080
0.00%, Series BB, due September 1, 2021	1,085	1,206
4.00% to 5.00%, Series CC, due September 1, 2021	1,275	1,400
5.10%, Series DD, due January 1, 2032	6,000	6,000
0.00%, Series EE, due August 1, 2023	4,386	4,804
3.00% to 5.50%, Series FF, due August 1, 2024	5,755	6,160
0.00%, Series GG, due August 1, 2026	1,262	1,352
4.00% to 5.00%, Series HH, due August 1, 2026	1,560	1,640
0.00%, Series II, due August 1, 2024	1,060	1,150
3.40% to 5.00%, Series JJ, due August 1, 2027	1,235	1,560
0.00%, Series KK, due August 1, 2028	1,435	1,526
5.00% to 5.50%, Series LL, due August 1, 2028	1,570	1,635
0.00%, Series MM, due August 1, 2030	1,801	1,901
3.00% to 4.375%, Series NN, due August 1, 2030	1,910	1,985
0.00%, Series OO, due August 1, 2031	2,860
2.00% to 5.00%, Series PP, due August 1, 2031	915
5.00%, Series QQ, due October 1, 2023	9,915
3.80%, Series RR, due October 1, 2038	22,500
4.25%, Series SS, due October 1, 2047	23,000
SUBTOTAL LONG-TERM DEBT	140,361	136,736
Add: Premium on Long Term Debt	2,236
Less: Current Portion of Long-term Debt	(11,130)	(4,569)
TOTAL LONG-TERM DEBT	131,467	132,167
Cumulative Preferred Stock
TOTAL PREFERRED STOCK
Convertible Preferred Stock $7.00 Series
TOTAL PREFERRED STOCK	1,457	1,457
Convertible Preferred Stock $8.00 Series
TOTAL PREFERRED STOCK	816	816
Nonredeemable Preferred Stock $7.00 Series
TOTAL PREFERRED STOCK	80	80
Nonredeemable Preferred Stock $4.75 Series
TOTAL PREFERRED STOCK	$ 1,000	$ 1,000

CONSOLIDATED STATEMENTS OF CAPITAL STOCK AND LONG-TERM DEBT (Parenthetical) - $ / shares	Dec. 31, 2012	Dec. 31, 2011
Common Stock, Par Value
Common Stock, Shares Authorized	40,000,000	40,000,000
Common Stock, Shares Outstanding	15,975,000	15,682,000
Preferred Stock, Par Value
Cumulative Preferred Stock
Preferred Stock, Par Value
Preferred Stock, Shares Authorized	134,000	134,000
Preferred Stock, Shares Outstanding	32,000	32,000
Convertible Preferred Stock $7.00 Series
Preferred Stock, Par Value
Preferred Stock, Shares Outstanding	14,000	14,000
Convertible Preferred Stock $8.00 Series
Preferred Stock, Par Value
Preferred Stock, Shares Outstanding	7,000	7,000
Nonredeemable Preferred Stock $7.00 Series
Preferred Stock, Par Value
Preferred Stock, Shares Outstanding	1,000	1,000
Nonredeemable Preferred Stock $4.75 Series
Preferred Stock, Par Value
Preferred Stock, Shares Outstanding	10,000	10,000

CONSOLIDATED STATEMENTS OF COMMON STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Retained Earnings	Total
Beginning balance at Dec. 31, 2009	$ 109,366	$ 30,265	$ 139,631
Beginning balance, shares at Dec. 31, 2009	13,519,000
Net Income		14,330	14,330
Dividend Reinvestment & Common Stock Purchase Plan	$ 1,917		1,917
Dividend Reinvestment & Common Stock Purchase Plan, shares	116,000
Restricted Stock Award, Net - Employees	$ 299		299
Restricted Stock Award, Net - Employees, shares	14,000
Stock Award - Board Of Directors	$ 24		24
Stock Award - Board Of Directors, shares	2,000
Issuance of Common Stock	$ 27,928		27,928
Issuance of Common Stock, shares	1,915,000
Cash Dividends on Common Stock		(10,510)	(10,510)
Cash Dividends on Preferred Stock		(207)	(207)
Common Stock Expenses		(133)	(133)
Ending Balance at Dec. 31, 2010	$ 139,534	33,745	173,279
Ending Balance, shares at Dec. 31, 2010	15,566,000
Net Income		13,447	13,447
Dividend Reinvestment & Common Stock Purchase Plan	$ 1,504		1,504
Dividend Reinvestment & Common Stock Purchase Plan, shares	82,000
Restricted Stock Award, Net - Employees	$ 323		323
Restricted Stock Award, Net - Employees, shares	30,000
Stock Award - Board Of Directors	$ 71		71
Stock Award - Board Of Directors, shares	4,000
Cash Dividends on Common Stock		(11,437)	(11,437)
Cash Dividends on Preferred Stock		(206)	(206)
Ending Balance at Dec. 31, 2011	$ 141,432	35,549	176,981
Ending Balance, shares at Dec. 31, 2011	15,682,000
Net Income		14,396	14,396
Dividend Reinvestment & Common Stock Purchase Plan	$ 1,587		1,587
Dividend Reinvestment & Common Stock Purchase Plan, shares	86,000
Restricted Stock Award, Net - Employees	$ 448		448
Restricted Stock Award, Net - Employees, shares	21,000
Stock Award - Board Of Directors	$ 105		105
Stock Award - Board Of Directors, shares	6,000
Cash Dividends on Common Stock		(11,679)	(11,679)
Cash Dividends on Preferred Stock		(206)	(206)
Ending Balance at Dec. 31, 2012	$ 143,572	$ 38,060	$ 181,632
Ending Balance, shares at Dec. 31, 2012	15,795,000

Organization, Summary of Significant Accounting Policies and Recent Developments

12 Months Ended

Dec. 31, 2012

Organization Summary Of Significant Accounting Policies And Recent Developments

Organization, Summary of Significant Accounting Policies and Recent Developments

Note 1 – Organization, Summary of Significant Accounting Policies and Recent Developments

(a) Organization - Middlesex Water Company (Middlesex) is the parent company and sole shareholder of Tidewater Utilities, Inc. (Tidewater), Tidewater Environmental Services, Inc. (TESI), Pinelands Water Company (Pinelands Water) and Pinelands Wastewater Company (Pinelands Wastewater) (collectively, Pinelands), Utility Service Affiliates, Inc. (USA), Utility Service Affiliates (Perth Amboy) Inc. (USA-PA) and Twin Lakes Utilities, Inc. (Twin Lakes). Southern Shores Water Company, LLC (Southern Shores) and White Marsh Environmental Systems, Inc. (White Marsh) are wholly-owned subsidiaries of Tidewater.

Middlesex Water Company has operated as a water utility in New Jersey since 1897, in Delaware, through our wholly-owned subsidiary, Tidewater, since 1992 and in Pennsylvania, through our wholly-owned subsidiary, Twin Lakes, since 2009. We are in the business of collecting, treating, distributing and selling water for domestic, commercial, municipal, industrial and fire protection purposes. We also operate New Jersey municipal water, wastewater and storm water systems under contract and provide wastewater services in New Jersey and Delaware through our subsidiaries. We also have an investment in a joint venture, Ridgewood Green RME, LLC, that is constructing, and will own and operate facilities, to optimize the production of electricity at the Village of Ridgewood, New Jersey wastewater treatment plant and other municipal facilities (full operation of the facilities is expected to begin in the second quarter of 2013). Our rates charged to customers for water and wastewater services, the quality of services we provide and certain other matters are regulated in New Jersey, Delaware and Pennsylvania by the New Jersey Board of Public Utilities (NJBPU), Delaware Public Service Commission (DEPSC) and Pennsylvania Public Utilities Commission (PAPUC), respectively. Our USA, USA-PA and White Marsh subsidiaries are not regulated utilities.

Certain reclassifications have been made to the prior year financial statements to conform with current period presentation.

(b) Principles of Consolidation – The financial statements for Middlesex and its wholly-owned subsidiaries (the Company) are reported on a consolidated basis. All significant intercompany accounts and transactions have been eliminated. Other financial investments in which the Company holds a 50% or less voting interest and cannot exercise control over the operation and policies of the investments are accounted for under the equity method of accounting. Under the equity method of accounting, the Company records its investment interests in Non Utility Assets and its percentage share of the earnings or losses of the investees in Other Income (Expense).

(c) System of Accounts – Middlesex, Pinelands Water and Pinelands Wastewater maintain their accounts in accordance with the Uniform System of Accounts prescribed by the NJBPU. Tidewater, TESI and Southern Shores maintain their accounts in accordance with DEPSC requirements. Twin Lakes maintains its accounts in accordance with PAPUC requirements.

(d) Regulatory Accounting - We maintain our books and records in accordance with accounting principles generally accepted in the United States of America. Middlesex and certain of its subsidiaries, which account for 89% of Operating Revenues and 98% of Total Assets, are subject to regulation in the state in which they operate. Those companies are required to maintain their accounts in accordance with regulatory authorities’ rules and guidelines, which may differ from other authoritative accounting pronouncements. In those instances, the Company follows the guidance provided in Accounting Standards Codification (ASC) 980, Regulated Operations.

In accordance with ASC 980, Regulated Operations, costs and obligations are deferred if it is probable that these items will be recognized for rate-making purposes in future rates. Accordingly, we have recorded costs and obligations, which will be amortized over various future periods. Any change in the assessment of the probability of rate-making treatment will require us to change the accounting treatment of the deferred item. We have no reason to believe any of the deferred items that are recorded will be treated differently by the regulators in the future. For additional information, see Note 2 – Rate and Regulatory Matters.

(e) Postretirement Benefit Plans - We maintain a noncontributory defined benefit pension plan (Pension Plan) which covers substantially all active employees who were hired prior to March 31, 2007. In addition, the Company maintains an unfunded supplemental plan for its executive officers. The Company has a postretirement benefit plan other than pensions (Other Benefits Plan) for substantially all of its retired employees. Employees hired after March 31, 2007 are not eligible to participate in this plan. Coverage includes healthcare and life insurance.

The Company’s costs for providing postretirement benefits are dependent upon numerous factors, including actual plan experience and assumptions of future experience. Postretirement benefit plan obligations and expense are determined based on investment performance, discount rates and various other demographic factors related to the population participating in the Company’s postretirement benefit plans, all of which can change significantly in future years. For more information on the Company’s Postretirement Benefit Plans, see Note 7 – Employee Benefit Plans.

(f) Utility Plant – Utility Plant is stated at original cost as defined for regulatory purposes. Property accounts are charged with the cost of betterments and major replacements of property. Cost includes direct material, labor and indirect charges for pension benefits and payroll taxes. The cost of labor, materials, supervision and other expenses incurred in making repairs and minor replacements and in maintaining the properties is charged to the appropriate expense accounts. At December 31, 2012, there was no event or change in circumstance that would indicate that the carrying amount of any long-lived asset was not recoverable.

(g) Depreciation – Depreciation is computed by each regulated member of the Company utilizing a rate approved by the applicable regulatory authority. The Accumulated Provision for Depreciation is charged with the cost of property retired, less salvage. The following table sets forth the range of depreciation rates for the major utility plant categories used to calculate depreciation for the years ended December 31, 2012, 2011 and 2010. These rates have been approved by the NJBPU, DEPSC or PAPUC:

Source of Supply	1.15% - 3.44%	Transmission and Distribution (T&D):
Pumping	2.87% - 5.39%	T&D – Mains	1.10% - 3.13%
Water Treatment	1.65% - 7.09%	T&D – Services	2.12% - 3.16%
General Plant	2.08% - 17.84%	T&D – Other	1.61% - 4.63%

Non-regulated fixed assets consist primarily of office buildings, furniture and fixtures, and transportation equipment. These assets are recorded at original cost and depreciation is calculated based on the estimated useful lives, ranging from 3 to 40 years.

(h) Preliminary Survey and Investigation (PS&I) Costs – In the design of water and wastewater systems that the Company ultimately intends to construct, own and operate certain expenditures are incurred to advance those project activities. These PS&I costs are recorded as deferred charges on the balance sheet because these costs are expected to be recovered through future rates charged to customers as the underlying projects are placed into service as utility plant. If it is subsequently determined that costs for a project recorded as PS&I are not recoverable through rates charged to our customers, the applicable PS&I costs are recorded as a charge to the income statement at that time.

(i) Customers’ Advances for Construction (CAC) – Water utility plant and/or cash advances are contributed to the Company by customers, real estate developers and builders in order to extend water service to their properties. These contributions are recorded as CAC. Refunds on these advances are made by the Company in accordance with agreements with the contributing party and are based on either additional operating revenues related to the utility plant or as new customers are connected to and take service from the utility plant. After all refunds are made and/or contract terms have expired, any remaining balance is transferred to Contributions in Aid of Construction.

Contributions in Aid of Construction (CIAC) – CIAC include direct non-refundable contributions of water utility plant and/or cash and the portion of CAC that becomes non-refundable.

CAC and CIAC are not depreciated in accordance with regulatory requirements. In addition, these amounts reduce the investment base for purposes of setting rates.

(j) Allowance for Funds Used During Construction (AFUDC) - Middlesex and its regulated subsidiaries capitalize AFUDC, which represents the cost of financing projects during construction. AFUDC is added to the construction costs of individual projects exceeding specific cost and construction period thresholds established for each company and then depreciated along with the rest of the utility plant’s costs over its estimated useful life. AFUDC is calculated using each company’s weighted cost of debt and equity as approved in their most recent respective regulatory rate order. The AFUDC rates for the years ended December 31, 2012, 2011 and 2010 for Middlesex and Tidewater are as follows:

	2012	2011	2010
Middlesex	7.34%	7.54%	7.54%
Tidewater	7.91%	8.24%	8.24%

(k) Accounts Receivable – We record bad debt expense based on historical write-offs combined with an evaluation of current conditions. The allowance for doubtful accounts was $0.8 million and $0.6 million at December 31, 2012 and 2011, respectively. Bad debt expense for the years ended December 31, 2012, 2011 and 2010 was $0.7 million, $0.7 million, $0.6 million, respectively. Receivables not expected to be received in 2013 are included as non-current assets in Operations Contracts, Developer and Other Receivables.

(l) Revenues - General metered customer’s bills for regulated water service are typically comprised of two components; a fixed service charge and a volumetric or consumption charge. Revenues from general metered service water customers, except Tidewater fixed service charges, include amounts billed in arrears on a cycle basis and unbilled amounts estimated from the last meter reading date to the end of the accounting period. The estimated unbilled amounts are determined by utilizing factors which include historical consumption usage and current climate and economic conditions. Actual billings may differ from our estimates. Tidewater customers are billed in advance for their fixed service charge and these revenues are recognized as the service is provided to the customer.

Southern Shores is an unmetered system. Customers are billed a fixed service charge in advance at the beginning of each month and revenues are recognized as earned.

Revenues from the City of Perth Amboy management contract are comprised of fixed and variable fees. Fixed fees, which have been set for the life of the contract, are billed monthly and recorded as earned. Variable fees, which are not significant, are recorded upon approval of the amount by the City of Perth Amboy.

(m) Deferred Charges and Other Assets - Unamortized Debt Expense is amortized over the lives of the related issues. Restricted Cash represents proceeds from loans entered into through state financing programs and is held in trusts. The proceeds are restricted for specific capital expenditures and debt service requirements.

(n) Income Taxes - Middlesex files a consolidated federal income tax return for the Company and income taxes are allocated based on the separate return method. Investment tax credits have been deferred and are amortized over the estimated useful life of the related property. For more information on income taxes, see Note 3 – Income Taxes.

(o) Statements of Cash Flows - For purposes of reporting cash flows, the Company considers all highly liquid investments with original maturity dates of three months or less to be cash equivalents. Cash and cash equivalents represent bank balances and money market funds with investments maturing in less than 90 days.

(p) Use of Estimates - Conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts in the financial statements. Actual results could differ from those estimates.

(q) Recent Accounting Pronouncements

Fair Value Measurements and Disclosures – In May 2011, the Financial Accounting Standards Board (the FASB) issued Accounting Standards Update (ASU) 2011-04, which amends ASC 820, Fair Value Measurements and Disclosures (ASC 820), to update guidance related to fair value measurements and disclosures as a step towards achieving convergence between generally accepted accounting principles and international financial reporting standards. ASU 2011-04 clarifies intent about application of existing fair value measurements and disclosures, changes certain requirements for fair value measurements and requires expanded disclosures. ASU 2011-04 was effective for interim and annual periods beginning after December 15, 2011. The Company’s adoption of ASU 2011-04 resulted in expanded fair value disclosures and did not have any impact on the Company’s results of operations, cash flows or financial position.

In January 2010, the FASB issued ASU 2010-06, which amends ASC 820, to add new requirements for disclosures about transfers into and out of Levels 1 and 2 and separate disclosures about purchases, sales, issuances, and settlements relating to Level 3 measurements. ASU 2010-06 also clarifies existing fair value disclosures about the level of disaggregation and about inputs and valuation techniques used to measure fair value. Further, ASU 2010-06 amends guidance on employers’ disclosures about postretirement benefit plan assets under ASC 715, Compensation – Retirement Benefits to require that disclosures be provided by classes of assets instead of by major categories of assets. Adoption of ASU 2010-06 had no impact on the Company’s results of operations, cash flows or financial position.

(r) Recent Developments

Superstorm Sandy - During the last week of October 2012, our businesses, primarily in New Jersey, were impacted by Superstorm Sandy. The most significant impact was widespread power outages caused by the storm’s heavy winds and rain. Because all of our critical water and wastewater facilities are equipped with emergency power generators, we were able to maintain service to our customers during the storm, as well as in its aftermath. The storm did not have a material adverse impact on our results of operations, financial position or cash flows. Claims for damages and any associated losses have been submitted to our insurance carriers. We anticipate that claims which may not be covered by insurance are recoverable through the regulatory rate setting process.

Borough of Sayreville, New Jersey and Hess Corporation - Middlesex has received notification from the Borough of Sayreville, New Jersey (Sayreville), one of Middlesex's wholesale contract customers, that Sayreville will not be renewing its contract for the purchase of water from Middlesex. In accordance with the terms, this contract will remain in effect through August 12, 2013. Middlesex is exploring options with Sayreville for its ongoing emergency water supply requirements. Gross operating revenues from water sales to Sayreville amounted to $1.9 million in 2012. In addition, Hess Corporation (Hess), Middlesex's largest retail water customer, has announced it intends to cease its oil refining operations at its Port Reading, New Jersey facility as early as of the end of February 2013. Revenues from Hess amounted to $2.6 million in 2012. Revenue reductions from either of these customers may accelerate the need for Middlesex to file a base rate increase Petition with the NJBPU.

Rate and Regulatory Matters

12 Months Ended

Dec. 31, 2012

Rate And Regulatory Matters

Rate and Regulatory Matters

Note 2 - Rate and Regulatory Matters

Rate Matters

Middlesex - In July 2012, the NJBPU approved an $8.1 million increase in Middlesex’s annual base water rates. A base rate increase request of $11.3 million was filed in January 2012 seeking recovery of increased costs of operations, chemicals, fuel, electricity, taxes, labor and benefits and decreases in industrial and commercial customer demand patterns, as well as capital investment in utility plant. The new base rates are designed to generate sufficient revenue to recover these increased costs and offset the lower customer demands, as well as provide a return on invested capital in rate base of $202.4 million, based on a return on equity of 10.15%. The rate increase became effective on July 20, 2012.

In November 2012, Middlesex filed a petition with the NJBPU seeking approval of foundational information (Foundational Filing) that would allow for the implementation of a Distribution System Improvement Charge (DSIC). A DSIC is a rate-mechanism that allows water utilities to recover investment in capital improvements to their water distribution system made between base rate proceedings. In February 2013, the Foundational Filing was approved by the NJBPU, which allows Middlesex to implement a DSIC rate in September 2013 to recover costs for qualifying projects that are placed in service in the six-month post-approval period. The DSIC rate is allowed to increase in three subsequent six month periods for any additional qualifying projects placed in service during those time periods. The maximum annual revenues allowed to be recovered under the approved Foundational Filing is $1.4 million.

In September 2012, Middlesex filed an application with the NJBPU seeking permission to establish a Purchased Water Adjustment Clause (PWAC) and implement a tariff rate sufficient to recover increased costs of $0.1 million to purchase untreated water from the NJWSA and treated water from a non-affiliated regulated water utility. We cannot predict whether the NJBPU will ultimately approve, deny, or reduce the amount of the request.

In March 2010, the NJBPU granted an increase in Middlesex’s annual operating revenues of 13.57%, or $7.8 million. The increase was necessitated by increased costs, as well as to provide a return on invested capital in rate base of $180.3 million based on a return on equity of 10.30%.

Tidewater – In June 2012, the DEPSC approved a $3.9 million increase in Tidewater’s annual base water rates. A base rate increase request of $6.9 million was filed in September 2011 seeking recovery of increased costs for operations, maintenance and taxes, as well as capital investment. Under DEPSC regulations, Tidewater had implemented interim rates in November 2011, which amounted to approximately $2.5 million on an annual basis. The new final base rates reflect the remaining $1.4 million and became effective June 19, 2012.

Effective January 1, 2013, Tidewater implemented a DEPSC approved $0.1 million DSIC rate increase.

TESI – In November 2012, TESI filed an application with the DEPSC seeking approval to purchase all of the utility assets of the 600 customer wastewater system serving the residents of the Plantations development (the Plantations) in Rehoboth Beach, Delaware. The application also requests the transfer of the wastewater franchise from the current owner to TESI. In connection with this transaction, TESI also filed an application with DEPSC seeking an approximate $0.1 million increase in the Plantations’ residents base wastewater rates. The purchase, and subsequent operation, of the Plantation’s wastewater system is contingent, among other things, upon the DEPSC’s approval of both applications. We cannot predict whether the DEPSC will ultimately approve or deny the purchase and base rate increase. A decision by the DEPSC is not expected until the third quarter of 2013.

In June 2012, the DEPSC approved a $0.6 million increase in TESI’s annual base wastewater rates, a portion of which is to be phased in through 2015. A base rate increase request of $0.8 million was filed in July 2011 seeking recovery of increased operation and maintenance costs, as well as capital investment. Under DEPSC regulations, TESI had implemented interim rates in September 2011, which amounted to approximately $0.1 million on an annual basis. The new final base rates became effective June 5, 2012.

Pinelands – In August 2012, Pinelands Water and Pinelands Wastewater filed petitions with the NJBPU seeking permission to increase base rates by approximately $0.2 million and $0.1 million per year, respectively. These requests were made as a result of capital investments as well as increased operations and maintenance costs for both companies. We cannot predict whether the NJBPU will ultimately approve, deny, or reduce the amount of the request. A decision by the NJBPU is not expected until the second quarter of 2013.

Southern Shores – Effective June 1, 2011, the DEPSC approved a multi-year agreement for a phased-in base rate increase for Southern Shores. This increase was made as a result of capital investment in the upgrade and renovation of Southern Shores’ primary water treatment facilities, as well as by increased operating costs. Under the terms of the agreement, which expires in 2020, customer rates will increase on January 1^st of each year to generate additional annual revenue of $0.1 million with each increase.

Twin Lakes - The PAPUC approved a $0.1 million, three-year phased-in base rate increase effective March 3, 2012. This increase was designed to recover capital investment in the upgrade and renovation of the Twin Lakes System, as well as increased operating costs.

Regulatory Matters

We have recorded certain costs as regulatory assets because we expect full recovery of, or are currently recovering, these costs in the rates we charge customers. These deferred costs have been excluded from rate base and, therefore, we are not earning a return on the unamortized balances. These items are detailed as follows:

	(Thousands of Dollars)
	December 31,				Remaining
Regulatory Assets	2012		2011		Recovery Periods
Postretirement Benefits	$	53,142	$	49,735		Various
Income Taxes		17,866		17,151		Various
Rate Cases, Storm Costs, Tank Painting, and Other		1,823		416		2-9 years
Total	$	72,831	$	67,302

Postretirement benefits include pension and other postretirement benefits that have been recorded on the Consolidated Balance Sheet in accordance with the guidance provided in ASC 715, Compensation – Retirement Benefits. These amounts represent obligations in excess of current funding, which the Company believes will be fully recovered in rates set by the regulatory authorities.

The recovery period for income taxes is dependent upon when the temporary differences between the tax and book treatment of various items reverse.

The Company uses composite depreciation rates for its regulated utility assets, which is currently an acceptable method under generally accepted accounting principles and is widely used in the utility industry. Historically, under the composite depreciation method, the anticipated costs of removing assets upon retirement are provided for over the life of those assets as a component of depreciation expense. The Company recovers certain asset retirement costs through rates charged to customers as an approved component of depreciation expense. As of December 31, 2012 and 2011, the Company has approximately $8.8 million and $8.0, respectively, of expected costs of removal recovered currently in rates in excess of actual costs incurred. These amounts are recorded as regulatory liabilities.

The Company is recovering in current rates acquisition premiums totaling $0.6 million over the remaining lives of the underlying Utility Plant. These deferred costs have been included in rate base as utility plant and a return is being earned on the unamortized balances during the recovery periods.

Income Taxes

12 Months Ended

Dec. 31, 2012

Income Tax Disclosure [Abstract]

Income Taxes

Note 3 – Income Taxes

Income tax expense differs from the amount computed by applying the statutory rate on book income subject to tax for the following reasons:

	(Thousands of Dollars)
	Years Ended December 31,
	2012			2011			2010
Income Tax at Statutory Rate	$	7,420		$	6,816		$	7,224
Tax Effect of:
Utility Plant Related		(442	)		(620	)		(826	)
State Income Taxes – Net		420			305			336
Employee Benefits		(23	)		1			33
Other		8			25			19
Total Income Tax Expense	$	7,383		$	6,527		$	6,786

Income tax expense is comprised of the following:

	(Thousands of Dollars)
	Years Ended December 31,
	2012			2011			2010
Current:
Federal	$	2,994		$	3,550		$	5,584
State		430			395			481
Deferred:
Federal		3,832			2,594			770
State		206			67			30
Investment Tax Credits		(79	)		(79	)		(79	)
Total Income Tax Expense	$	7,383		$	6,527		$	6,786

The statutory review periods for income tax returns for the years prior to 2010 have been closed. An examination by the Internal Revenue Service of Middlesex’s Federal income tax returns for 2007 and 2008 was completed during 2010 and resulted in a net refund, including interest, of less than $0.1 million. The refund noted above was recorded to the appropriate current and deferred tax accounts and the interest was reported as other income. In the event that there is interest and penalties associated with income tax adjustments in future examinations, these amounts will be reported under interest expense and other expense, respectively. There are no unrecognized tax benefits resulting from prior period tax positions. The Company is not aware of any uncertain tax positions that could result in a future tax liability.

Deferred income taxes reflect the net tax effect of temporary differences between the carrying amounts of assets and liabilities for financial purposes and the amounts used for income tax purposes. The components of the net deferred tax liability are as follows:

	(Thousands of Dollars)
	December 31,
	2012			2011
Utility Plant Related	$	39,020		$	35,135
Customer Advances		(3,673	)		(3,737	)
Employee Benefits		6,523			6,342
Investment Tax Credits (ITC)		1,068			1,146
Other		(94	)		(718	)
Total Deferred Tax Liability and ITC	$	42,844		$	38,168

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Paragraph 136, 172
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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-Paragraph 43, 44, 45, 46, 47, 48, 49
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Commitments and Contingent Liabilities

12 Months Ended

Dec. 31, 2012

Commitments And Contingent Liabilities

Commitments and Contingent Liabilities

Note 4 - Commitments and Contingent Liabilities

Water Supply - Middlesex has an agreement with the NJWSA for the purchase of untreated water through November 30, 2023, which provides for an average purchase of 27 million gallons a day (mgd). Pricing is set annually by the NJWSA through a public rate making process. The agreement has provisions for additional pricing in the event Middlesex overdrafts or exceeds certain monthly and annual thresholds.

Middlesex also has an agreement with a non-affiliated regulated water utility for the purchase of treated water. This agreement, which expires February 27, 2016, provides for the minimum purchase of 3.0 mgd of treated water with provisions for additional purchases.

Purchased water costs are shown below:

	Years Ended December 31,
	(Millions of Dollars)
Purchased Water	2012		2011		2010
Untreated	$	2.4	$	2.4	$	2.5
Treated		3.1		2.7		2.9
Total Costs	$	5.5	$	5.1	$	5.4

Contract Operations - USA-PA operates the City of Perth Amboy, New Jersey’s (Perth Amboy) water and wastewater systems under a 20-year agreement, which expires in 2018. In connection with the agreement with Perth Amboy, USA-PA entered into a 20-year subcontract with a wastewater operating company for the operation and maintenance of the Perth Amboy wastewater collection system. The subcontract provides for the sharing of certain fixed and variable fees and operating expenses.

Construction –The Company may spend up to $22.7 million in 2013, $22.1 million in 2014 and $28.2 million in 2015 on its construction program. The actual amount and timing of capital expenditures is dependent on customer growth, residential new home construction and sales and project scheduling. There is no assurance that projected customer growth and residential new home construction and sales will occur.

Litigation – The Company is a defendant in lawsuits in the normal course of business. We believe the resolution of pending claims and legal proceedings will not have a material adverse effect on the Company’s consolidated financial statements.

Change in Control Agreements – The Company has Change in Control Agreements with certain of its officers that provide compensation and benefits in the event of termination of employment in connection with a change in control of the Company.

- Definition

The entire disclosure for commitments and contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 20
-Section 50
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Short-term Borrowings

12 Months Ended

Dec. 31, 2012

Short-term Debt [Abstract]

Short-term Borrowings

Note 5 – Short-term Borrowings

Information regarding the Company’s short-term borrowings for the years ended December 31, 2012 and 2011 is summarized below:

	(Millions of Dollars)
	2012			2011
Established Lines at Year-End	$	60.0		$	60.0
Maximum Amount Outstanding		29.0			24.3
Average Outstanding		25.5			20.7
Notes Payable at Year-End		28.0			24.3
Weighted Average Interest Rate		1.43	%		1.44	%
Weighted Average Interest Rate at Year-End		1.40	%		1.33	%

The maturity dates for the Notes Payable as of December 31, 2012 are all in January 2013 and are extendable at the discretion of the Company.

Interest rates for short-term borrowings are below the prime rate with no requirement for compensating balances.

Capitalization

12 Months Ended

Dec. 31, 2012

Capitalization

Capitalization

Note 6 - Capitalization

All the transactions discussed below related to the issuance of securities were approved by either the NJBPU or DEPSC, except where otherwise noted.

Common Stock

In June 2010, the Company sold and issued 1.9 million shares of common stock in a public offering that was priced at $15.21 per share. The net proceeds of approximately $27.8 million were used to repay certain of the Company’s short-term debt outstanding.

The number of shares authorized under the Dividend Reinvestment and Common Stock Purchase Plan (DRP) is 2.3 million shares. The cumulative number of shares issued under the DRP at December 31, 2012 is 2.1 million. For the years ended December 31, 2012, December 31, 2011 and December 31, 2010, the Company raised approximately $1.6 million, $1.5 million and $1.9 million, respectively, through the issuance of shares under the DRP.

The Company issues shares under a restricted stock plan for certain management employees, which is described in Note 7 – Employee Benefit Plans.

The Company maintains a stock plan for its outside directors (the Outside Director Stock Compensation Plan). For the years ended December 31, 2012, December 31, 2011 and December 31, 2010, 5,768 shares, 3,833 shares and 1,416 shares, respectively, of common stock were granted and issued to the Company’s outside directors under the Outside Director Stock Compensation Plan and 87,429 shares remain available for future awards. The maximum number of shares authorized for grant under the Outside Director Stock Compensation Plan is 100,000.

In the event dividends on the preferred stock are in arrears, no dividends may be declared or paid on the common stock of the Company. At December 31, 2012, no preferred stock dividends were in arrears.

Preferred Stock

If four or more quarterly dividends are in arrears, the preferred shareholders, as a class, are entitled to elect two members to the Board of Directors in addition to Directors elected by holders of the common stock.

At December 31, 2012 and 2011, there were less than 0.1 million shares of preferred stock authorized and outstanding and there were no dividends in arrears.

The Company may not pay any dividends on its common stock unless full cumulative dividends to the preceding dividend date for all outstanding shares of preferred stock have been paid or set aside for payment. All such preferred dividends have been paid. In addition, if Middlesex were to liquidate, holders of preferred stock would be paid back the stated value of their preferred shares before any distributions could be made to common stockholders.

The conversion feature of the no par $7.00 Series Cumulative and Convertible Preferred Stock allows the security holders to exchange one convertible preferred share for twelve shares of the Company's common stock. In addition, the Company may redeem up to 10% of the outstanding convertible stock in any calendar year at a price equal to the fair value of twelve shares of the Company's common stock for each share of convertible stock redeemed. In February 2011, the Company repurchased 93 shares of its $7.00 Series, nonredeemable cumulative preferred stock at par value for approximately $9 thousand.

The conversion feature of the no par $8.00 Series Cumulative and Convertible Preferred Stock allows the security holders to exchange one convertible preferred share for 13.714 shares of the Company's common stock. The preferred shares are convertible into common stock at the election of the security holder or Middlesex.

Long-term Debt

In November 2012, Middlesex completed the transaction for the redemption and refinance of $57.5 million of First Mortgage Bonds (Bonds). The Bonds were originally issued in five separate transactions or series under the loan program of the New Jersey Economic Development Authority (NJEDA) and were replaced with three new series of Bonds designated as Series QQ, RR and SS totaling $55.4 million issued through the NJEDA, net of a $2.2 million issuance premium. The restricted proceeds of the new Bonds were used to redeem $51.5 million of the original Bonds in December 2012 and $6.0 million of the original Bonds in January 2013.

In May 2012, Middlesex borrowed $3.9 million through the New Jersey Environmental Infrastructure Trust (NJEIT) under the New Jersey State Revolving Fund (SRF) loan program and issued Bonds designated as Series OO ($3.0 million) and Series PP ($0.9 million). The interest rate on the Series OO Bonds is zero and the interest rate on the Series PP Bonds ranges from 2.0% to 5.0% depending on the serial maturity date. The final maturity date for the Bonds is August 1, 2031. Proceeds may only be used for the Middlesex 2012 RENEW Program, which is Middlesex’s program to clean and cement unlined mains in the Middlesex system.

In December 2010, Middlesex issued $4.0 million of Bonds through the NJEIT under the New Jersey SRF program. The Company closed on the Bonds designated as Series MM and NN in December 2010. Proceeds may only be used for the Middlesex 2011 RENEW Program.

In March 2011, Tidewater closed on a $2.8 million loan with the Delaware SRF program which allowed, but did not obligate, Tidewater to draw against a General Obligation Note for a specific project. The interest rate on all draws was set at 3.75% with a final maturity of July 1, 2031. As of December 31, 2012, Tidewater has borrowed $2.7 million against this loan and does not anticipate any future borrowings under this loan.

In March 2011, Southern Shores closed on a $1.6 million loan with the Delaware SRF program, which allowed, but did not obligate, Southern Shores to draw against a General Obligation Note for a specific project. The interest rate on any draw was set at 3.75% with a final maturity of November 30, 2030. As of December 31, 2012, Southern Shores has borrowed $1.4 million against this loan and does not anticipate any future borrowings under this loan.

First Mortgage Bonds Series QQ through SS are term bonds with single maturity dates subsequent to 2017. Principal repayments for all series of the Company’s long-term debt extend beyond 2017. The aggregate annual principal repayment obligations for all long-term debt over the next five years are shown below:

Year	(Millions of Dollars) Annual Maturities
2013	$11.1
2014	$5.2
2015	$5.3
2016	$5.4
2017	$5.5

The weighted average interest rate on all long-term debt at both December 31, 2012 and 2011 was 4.34% and 5.13%, respectively. Except for the Amortizing Secured Notes, all of the Company’s outstanding long-term debt has been issued through the NJEDA ($61.4 million), the NJEIT program ($31.2 million) and the Delaware SRF program ($10.2 million).

Restricted cash includes proceeds from various New Jersey SRF loans. These funds are held in trusts and restricted for specific capital expenditures and debt service requirements. As discussed above, Series MM, NN, OO and PP proceeds can only be used for the applicable RENEW Programs. All other bond issuance balances in restricted cash are for debt service requirements.

In 2012 and 2011, the NJEIT deobligated principal payments of $0.3 million and $0.6 million, respectively, on several series of SRF long-term debt.

Substantially all of the Utility Plant of the Company is subject to the lien of its mortgage, which includes debt service and capital ratio covenants. The Company is in compliance with all of its mortgage covenants and restrictions.

Earnings Per Share

The following table presents the calculation of basic and diluted earnings per share (EPS) for the three years ended December 31, 2012. Basic EPS is computed on the basis of the weighted average number of shares outstanding. Diluted EPS assumes the conversion of both the Convertible Preferred Stock $7.00 Series and $8.00 Series.

	(In Thousands, Except per Share Amounts)
	2012					2011					2010
Basic:	Income			Shares		Income			Shares		Income			Shares
Net Income	$	14,396			15,733	$	13,447			15,615	$	14,330			14,654
Preferred Dividend		(206	)				(206	)				(207	)
Earnings Applicable to Common Stock	$	14,190			15,733	$	13,241			15,615	$	14,123			14,654
Basic EPS	$	0.90				$	0.85				$	0.96
Diluted:
Earnings Applicable to Common Stock	$	14,190			15,733	$	13,241			15,615	$	14,123			14,654
$7.00 Series Dividend		97			166		97			166		97			166
$8.00 Series Dividend		56			96		56			96		56			96
Adjusted Earnings Applicable to Common Stock	$	14,343			15,995	$	13, 394			15,877	$	14,276			14,916
Diluted EPS	$	0.90				$	0.84				$	0.96

Fair Value of Financial Instruments

The following methods and assumptions were used by the Company in estimating its fair value disclosure for financial instruments for which it is practicable to estimate that value. The carrying amounts reflected in the consolidated balance sheets for cash and cash equivalents, accounts receivable, accounts payable and notes payable approximate their respective fair values due to the short-term maturities of these instruments. The fair value of the Company’s long-term debt relating to Bonds and SRF Notes is based on quoted market prices for similar issues. Under the fair value hierarchy, the fair value of cash and cash equivalents is classified as a Level 1 measurement and the fair value of notes payable and the Bonds and SRF Notes in the table below are classified as Level 2 measurements. The carrying amount and fair value of the Company’s bonds were as follows:

	(Thousands of Dollars)
	At December 31,
	2012				2011
	Carrying		Fair		Carrying		Fair
	Amount		Value		Amount		Value
Bonds	$	91,938	$	93,556	$	86,577	$	87,283
State Revolving Bonds	$	708	$	712	$	793	$	799

For other long-term debt for which there was no quoted market price, it was not practicable to estimate their fair value. The carrying amount of these instruments was $47.7 million and $49.3 million at December 31, 2012 and 2011, respectively. Customer advances for construction have a carrying amount of $22.0 million and $21.9 million at December 31, 2012 and 2011, respectively. Their relative fair values cannot be accurately estimated since future refund payments depend on several variables, including new customer connections, customer consumption levels and future rate increases.

Employee Benefit Plans

12 Months Ended

Dec. 31, 2012

EmployeeBenefitPlansAbstract

Employee Benefit Plans

Note 7 - Employee Benefit Plans

Pension Benefits

The Company’s Pension Plan covers all active employees hired prior to March 31, 2007. Employees hired after March 31, 2007 are not eligible to participate in this plan, but can participate in a defined contribution profit sharing plan that provides an annual contribution at the discretion of the Company, based upon a percentage of the participants’ compensation. In order to be eligible for contribution, the eligible employee must be employed by the Company on December 31^st of the year to which the contribution relates. In addition, the Company maintains an unfunded supplemental plan for its executive officers. The Accumulated Benefit Obligation for the Company’s Pension Plan at December 31, 2012 and 2011 was $52.4 million and $46.5 million, respectively.

Other Benefits

The Company’s Other Benefits Plan covers substantially all of its current retired employees. Employees hired after March 31, 2007 are not eligible to participate in this plan. Coverage includes healthcare and life insurance. Accrued retirement benefit costs are recorded each year.

Regulatory Treatment of Over/Underfunded Retirement Obligations

Because the Company is subject to regulation in the states in which it operates, it is required to maintain its accounts in accordance with the regulatory authority’s rules and guidelines, which may differ from other authoritative accounting pronouncements. In those instances, the Company follows the guidance of ASC 980, Regulated Operations. Based on prior regulatory practice, and in accordance with the guidance in ASC 980, Regulated Operations, the Company records underfunded Pension Plan and Other Benefits Plan obligation costs, which otherwise would be recognized in Other Comprehensive Income under ASC 715, Compensation – Retirement Benefits, as a Regulatory Asset, and expects to recover those costs in rates charged to customers.

The Company uses a December 31 measurement date for all of its employee benefit plans. The table below sets forth information relating to the Company’s Pension Plan and Other Benefits Plan for 2012 and 2011.

	December 31,
	(Thousands of Dollars)
	Pension Plan						Other Benefits Plan
	2012			2011			2012			2011
Change in Projected Benefit Obligation:
Beginning Balance	$	56,201		$	42,138		$	43,121		$	29,605
Service Cost		2,198			1,574			1,784			1,306
Interest Cost		2,417			2,261			1,868			1,604
Actuarial Loss		3,833			12,047			4,425			11,121
Benefits Paid		(1,832	)		(1,819	)		(590	)		(515	)
Ending Balance	$	62,817		$	56,201		$	50,608		$	43,121

Change in Fair Value of Plan Assets:
Beginning Balance	$	32,196		$	29,989		$	15,817		$	12,890
Actual Return on Plan Assets		3,879			470			1,241			177
Employer Contributions		3,661			3,556			3,940			3,265
Benefits Paid		(1,832	)		(1,819	)		(590	)		(515	)
Ending Balance	$	37,904		$	32,196		$	20,408		$	15,817

Funded Status	$	(24,913	)	$	(24,005	)	$	(30,200	)	$	(27,304	)

	December 31,
	(Thousands of Dollars)
	Pension Plan						Other Benefits Plan
	2012			2011			2012			2011
Amounts Recognized in the Consolidated Balance Sheets consist of:
Current Liability		(345	)		(303	)		—			—
Noncurrent Liability		(24,568	)		(23,702	)		(30,200	)		(27,304	)
Net Liability Recognized	$	(24,913	)	$	(24,005	)	$	(30,200	)	$	(27,304	)

	Years Ended December 31,
	(Thousands of Dollars)
	Pension Plan									Other Benefits Plan
	2012			2011			2010			2012			2011			2010
Components of Net Periodic Benefit Cost
Service Cost	$	2,198		$	1,575		$	1,396		$	1,784		$	1,306		$	1,025
Interest Cost		2,417			2,261			2,228			1,868			1,604			1,335
Expected Return on Plan Assets		(2,458	)		(2,283	)		(2,020	)		(1,258	)		(1,026	)		(759	)
Amortization of Net Transition Obligation		—			—			—			135			135			135
Amortization of Net Actuarial Loss		1,549			565			506			1,765			878			531
Amortization of Prior Service Cost		10			10			10			—			—			—
Net Periodic Benefit Cost	$	3,716		$	2,128		$	2,120		$	4,294		$	2,897		$	2,267

Amounts that are expected to be amortized from Regulatory Assets into Net Periodic Benefit Cost in 2013 are as follows:

	(Thousands of Dollars)
	Pension Plan		Other Benefits Plan
Actuarial Loss	$	1,632	$	1,976
Prior Service Cost		10		—

The discount rate and compensation increase rate for determining our postretirement benefit plans’ benefit obligations and costs as of December 31, 2012, 2011 and 2010, respectively, are as follows:

	Pension Plan						Other Benefits Plan
	2012		2011		2010		2012		2011		2010
Weighted Average Assumptions:
Expected Return on Plan Assets		7.50%		7.50%		7.50%		7.50%		7.50%		7.50%
Discount Rate for:
Benefit Obligation		3.99%		4.37%		5.48%		3.99%		4.37%		5.48%
Benefit Cost		4.37%		5.48%		5.95%		4.37%		5.48%		5.95%
Compensation Increase for:
Benefit Obligation		3.00%		3.00%		3.00%		3.00%		3.00%		3.00%
Benefit Cost		3.00%		3.00%		3.00%		3.00%		3.00%		3.00%

The compensation increase assumption for the Other Benefits Plan is attributable to life insurance provided to qualifying employees upon their retirement. The insurance coverage will be determined based on the employee’s base compensation as of their retirement date.

For the 2012 valuation, costs and obligations for our Other Benefits Plan assumed a 9.0% annual rate of increase in the per capita cost of covered healthcare benefits in 2013 with a decline of 1.0% per year for 2014-2016 and 0.5% per year for 2017-2018, resulting in an annual rate of increase in the per capita cost of covered healthcare benefits of 5% by year 2018.

A one-percentage point change in assumed healthcare cost trend rates would have the following effects on the Other Benefits Plan:

	(Thousands of Dollars)
	1 Percentage Point
	Increase		Decrease
Effect on Current Year’s Service and Interest Cost	$	838	$	(640	)
Effect on Projected Benefit Obligation	$	9,560	$	(7,477	)

The following benefit payments, which reflect expected future service, are expected to be paid:

	(Thousands of Dollars)
Year	Pension Plan		Other Benefits Plan
2013	$	1,949	$	827
2014		1,938		988
2015		1,931		1,158
2016		1,951		1,321
2017		2,263		1,503
2018-2022		12,950		9,969
Totals	$	22,982	$	15,766

Benefit Plans Assets

The allocation of plan assets at December 31, 2012 and 2011 by asset category is as follows

	Pension Plan						Other Benefits Plan
Asset Category	2012			2011			2012			2011			Target			Range
Equity Securities		60.9	%		61.6	%		40.3	%		37.0	%		60	%		30-65%
Debt Securities		32.9	%		31.3	%		53.0	%		57.8	%		38	%		25-70%
Cash		6.0	%		6.9	%		5.9	%		4.6	%		2	%		0-10%
Commodities		0.2	%		0.2	%		0.8	%		0.6	%		0	%		0%
Total		100.0	%		100.0	%		100.0	%		100.0	%

Two outside investment firms each manage a portion of the Pension Plan asset portfolio. One of those investment firms also manages the Other Benefits Plan asset portfolio. Quarterly meetings are held between the Company’s Pension Committee of the Board of Directors and the investment managers to review their performance and asset allocation. If the actual asset allocation is outside the targeted range, the Pension Committee reviews current market conditions and advice provided by the investment managers to determine the appropriateness of rebalancing the portfolio.

The objective of the Company is to maximize the long-term return on retirement plan assets, relative to a reasonable level of risk, maintain a diversified investment portfolio and maintain compliance with the Employee Retirement Income Security Act of 1974. The expected long-term rate of return is based on the various asset categories in which plan assets are invested and the current expectations and historical performance for these categories.

Equity securities include Middlesex common stock in the amounts of $0.8 million (2.0% of total plan assets) and $0.7 million (2.3 % of total pension plan assets) at December 31, 2012 and 2011, respectively.

Fair Value Measurements

Accounting guidance provides a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are described as follows:

Level 1 – Inputs to the valuation methodology are unadjusted quoted market prices for identical assets or liabilities in accessible active markets.

Level 2 – Inputs to the valuation methodology that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. If the asset or liability has a specified contractual term, the Level 2 input must be observable for substantially the full term of the asset or liability.

Level 3 – Inputs to the valuation methodology are unobservable and significant to the fair value measurement.

Certain investments in cash and cash equivalents, equity securities, and commodities are valued based on quoted market prices in active markets and are classified as Level 1 investments. Certain investments in cash and cash equivalents, equity securities and fixed income securities are valued using prices received from pricing vendors that utilize observable inputs and are therefore classified as Level 2 investments.

The following table presents Middlesex’s Pension Plan assets measured and recorded at fair value within the fair value hierarchy as of December 31, 2012 (amounts in thousands):

	Level 1		Level 2		Level 3		Total
Common Trust Fund-Large Cap	$	—	$	10,409	$	—	$	10,409
Mutual Funds:
Mid Cap Growth		703		—		—		703
Mid Cap Value		412		—		—		412
Foreign Small Mid Growth		255		—		—		255
Foreign Large Blend		710		—		—		710
Pacific Asis/ex-Japan Stock		164						164
Diversied Emerging Markets		222		—		—		222
Preferred Stock Index		82		—		—		82
Money Market Funds:
Cash and Cash Equivalents		2,385		747		—		3,132
Equity Securities:
Non-Financial Services		293		—		—		293
Financial Services		1,883		—		—		1,883
Utilities		1,334		—		—		1,334
Consumer Growth		1,778		—		—		1,778
Consumer Staples		931		—		—		931
Consumer Cyclicals		886		—		—		886
Industrial Resources		224		—		—		224
Capital Equipment		669		—		—		669
Technology		1,324		—		—		1,324
Energy		860		—		—		860
Corporate Bonds		—		3,575		—		3,575
Mortgage-Backed Securities (1)		—		2,570		—		2,570
Asset-Backed Securities		—		25		—		25
Agency/US/State/Municipal Debt				5,312		—		5,312
Sovereign/Non-US Debt		—		63		—		63
Commodities		88		—		—		88
Total Investments	$	15,203	$	22,701	$	—	$	37,904

(1) Mortgage-backed securities represent AAA rated securities and substantially all of the asset-backed securities are highly-rated (Standard & Poor’s rating of AA+), secured primarily by credit card, auto loan, and home equity receivables.

The following table presents Middlesex’s Pension Plan assets measured and recorded at fair value within the fair value hierarchy as of December 31, 2011 (amounts in thousands):

	Level 1		Level 2		Level 3		Total
Common Trust Fund-Large Cap	$	—	$	7,641	$	—	$	7,641
Mutual Funds:
Mid Cap Growth		655		—		—		655
Mid Cap Value		356		—		—		356
Foreign Small Mid Growth		214		—		—		214
Foreign Large Core		97		—		—		97
Foreign Large Blend		586		—		—		586
Diversied Emerging Markets		281		—		—		281
Preferred Stock Index		74		—		—		74
Money Market Funds:
Cash and Cash Equivalents		1,389		1,281		—		2,670
Equity Securities:
Non-Financial Services		189		—		—		189
Financial Services		1,289		—		—		1,289
Utilities		1,629		—		—		1,629
Consumer Growth		1,685		—		—		1,685
Consumer Staples		956		—		—		956
Consumer Cyclicals		853		—		—		853
Industrial Resources		159		—		—		159
Capital Equipment		651		—		—		651
Technology		1,345		—		—		1,345
Energy		1,160		—		—		1,160
Other		40		—		—		40
Corporate Bonds		—		2,324		—		2,324
Mortgage-Backed Securities (1)		—		2,527		—		2,527
Asset-Backed Securities		—		27		—		27
Agency/US/State/Municipal Debt		129		4,532		—		4,661
Sovereign/Non-US Debt		—		75		—		75
Commodities		52		—		—		52
Total Investments	$	13,789	$	18,407	$	—	$	32,196

The following table presents Middlesex’s Other Benefits Plan assets measured and recorded at fair value within the fair value hierarchy as of December 31, 2012 (amounts in thousands):

	Level 1		Level 2		Level 3		Total
Mutual Funds:
Small Cap Core	$	97	$	—	$	—	$	97
Mid Cap Core		104		—		—		104
Mid Cap Growth		290		—		—		290
Mid Cap Value		446		—		—		446
Large Cap Core		5,270		—		—		5,270
Large Cap Growth		902		—		—		902
Large Cap Value				—		—		—
Foreign Small Mid Growth		303		—		—		303
Foreign Large Core		234		—		—		234
Foreign Large Growth		292		—		—		292
Diversified Emerging Markets		282		—		—		282
Preferred Stock Index		119		—		—		119
Money Market Funds:
Cash and Cash Equivalents		—		1,205		—		1,205
Agency/US/State/Municipal Debt		780		9,914		—		10,694
Commodities		170		—		—		170
Total Investments	$	9,289	$	11,119	$	—	$	20,408

The following table presents Middlesex’s Other Benefits Plan assets measured and recorded at fair value within the fair value hierarchy as of December 31, 2011 (amounts in thousands):

	Level 1		Level 2		Level 3		Total
Mutual Funds:
Small Cap Core	$	90	$	—	$	—	$	90
Mid Cap Core		48		—		—		48
Mid Cap Growth		253		—		—		253
Mid Cap Value		288		—		—		288
Large Cap Core		3,406		—		—		3,406
Large Cap Growth		398		—		—		398
Large Cap Value		349		—		—		349
Foreign Small Mid Growth		225		—		—		225
Foreign Large Core		279		—		—		279
Foreign Large Growth		247		—		—		247
Diversified Emerging Markets		163		—		—		163
Preferred Stock Index		107		—		—		107
Money Market Funds:
Cash and Cash Equivalents		—		818		—		818
Agency/US/State/Municipal Debt		424		8,622		—		9,046
Commodities		100		—		—		100
Total Investments	$	6,377	$	9,440	$	—	$	15,817

Benefit Plans Contributions

For the Pension Plan, Middlesex made total cash contributions of $3.7 million in 2012 and expects a similar level of funding in 2013.

For the Other Benefits Plan, Middlesex made total cash contributions of $3.9 million in 2012 and expects a similar level of funding in 2013.

401(k) Plan

The Company has a 401(k) defined contribution plan, which covers substantially all employees with more than 1,000 hours of service. Under the terms of the Plan, the Company matches 100% of a participant’s contributions, which do not exceed 1% of a participant’s compensation, plus 50% of a participant’s contributions exceeding 1%, but not more than 6%. The Company’s matching contributions were $0.5 million for each of the years ended December 31, 2012, 2011 and 2010.

For those employees hired after March 31, 2007 and still actively employed on December 31, 2012, the Company approved and will fund discretionary contribution of $0.2 million, which was based on 5.0% of eligible 2012 compensation. For the years ended December 31, 2011 and 2010, the Company made discretionary contributions of $0.2 million and $0.1 million, respectively, for those qualifying employees.

Stock-Based Compensation

The Company has a stock compensation plan for certain management employees (the 2008 Restricted Stock Plan). The Company maintains an escrow account for 0.1 million shares of the Company's common stock for the 2008 Restricted Stock Plan. Such stock is subject to an agreement requiring forfeiture by the employee in the event of termination of employment within five years of the award other than as a result of retirement, death, disability or change in control. The maximum number of shares authorized for grant under the 2008 Restricted Stock Plan is 0.3 million shares, for which 0.2 million remain as unissued shares.

The Company recognizes compensation expense at fair value for the restricted stock awards in accordance with

ASC 718, Compensation – Stock Compensation. Compensation expense is determined by the market value of the stock on the date of the award and is being amortized over a five-year period.

The following table presents information on the 2008 Restricted Stock Plan:

	Shares (thousands)			Unearned Compensation (thousands)			Weighted Average Grant Price
Balance, January 1, 2010		93		$	990
Granted		14			239		$	16.97
Vested		(13	)		—
Forfeited		—			—
Amortization of Compensation Expense		—			(338	)
Balance, December 31, 2010		94		$	891
Granted		30			518		$	16.97
Vested		(15	)		—
Forfeited		(1	)		(7	)
Amortization of Compensation Expense		—			(323	)
Balance, December 31, 2011		108		$	1,079
Granted		21			408		$	19.35
Vested		(15	)		—
Forfeited		—			—
Amortization of Compensation Expense		—			(448	)
Balance, December 31, 2012		114		$	1,039

The fair value of vested restricted shares was $0.3 million, $0.2 million and $0.2 million for the years ended December 31, 2012, 2011, and 2010, respectively.

- Definition

The entire disclosure for pension and other postretirement benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-URI http://asc.fasb.org/topic&trid=2235017

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Implementation Guide (Q and A)
-Number FAS88
-Paragraph 63
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 106
-Paragraph 518
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 03-2
-Paragraph 8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 87
-Paragraph 264
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph q
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph h
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 8
-Subparagraph m
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5, 6, 7, 8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 158
-Paragraph 7, 21, 22
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS106-2
-Paragraph 20, 21, 22
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 30
-Paragraph 26
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Business Segment Data

12 Months Ended

Dec. 31, 2012

Business Segment Data

Business Segment Data

Note 8 – Business Segment Data

The Company has identified two reportable segments. One is the regulated business of collecting, treating and distributing water on a retail and wholesale basis to residential, commercial, industrial and fire protection customers in parts of New Jersey, Delaware and Pennsylvania. This segment also includes regulated wastewater systems in New Jersey and Delaware. The Company is subject to regulations as to its rates, services and other matters by the states of New Jersey, Delaware and Pennsylvania with respect to utility service within these states. The other segment is primarily comprised of non-regulated contract services for the operation and maintenance of municipal and private water and wastewater systems in New Jersey and Delaware.

Inter-segment transactions relating to operational costs are treated as pass-through expenses. Finance charges on inter-segment loan activities are based on interest rates that are below what would normally be charged by a third party lender.

	(Thousands of Dollars)
	Years Ended December 31,
Operations by Segments:	2012			2011			2010
Revenues:
Regulated	$	98,021		$	91,729		$	92,378
Non – Regulated		12,851			10,805			10,937
Inter-segment Elimination		(493	)		(465	)		(580	)
Consolidated Revenues	$	110,379		$	102,069		$	102,735

Operating Income:
Regulated	$	25,944		$	22,760		$	24,815
Non – Regulated		1,703			1,441			1,782
Consolidated Operating Income	$	27,647		$	24,201		$	26,597

Depreciation:
Regulated	$	10,241		$	9,601		$	9,093
Non – Regulated		168			145			151
Consolidated Depreciation	$	10,409		$	9,746		$	9,244

Other Income, Net:
Regulated	$	1,489		$	1,982		$	1,265
Non – Regulated		94			896			313
Inter-segment Elimination		(726	)		(729	)		(134	)
Consolidated Other Income, Net	$	857		$	2,149		$	1,444

Interest Expense:
Regulated	$	6,725		$	6,376		$	6,925
Non – Regulated		96			97			134
Inter-segment Elimination		(96	)		(97	)		(134	)
Consolidated Interest Charges	$	6,725		$	6,376		$	6,925

Income Taxes:
Regulated	$	6,579		$	5,548		$	6,004
Non – Regulated		804			979			782
Consolidated Interest Charges	$	7,383		$	6,527		$	6,786

Net Income:
Regulated	$	13,500		$	12,088		$	13,152
Non – Regulated		896			1,359			1,178
Consolidated Net Income	$	14,396		$	13,447		$	14,330

Capital Expenditures:
Regulated	$	21,149		$	23,125		$	29,344
Non – Regulated		429			437			260
Total Capital Expenditures	$	21,578		$	23,562		$	29,604

	As of December 31, 2012			As of December 31, 2011
Assets:
Regulated	$	560,165		$	539,947
Non – Regulated		11,674			10,325
Inter-segment Elimination		(10,113	)		(12,736	)
Consolidated Assets	$	561,726		$	537,536

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8981-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8971-108599

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8595-108599

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
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-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8380-108599

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-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8933-108599

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8844-108599

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 40
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9031-108599

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9054-108599

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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8924-108599

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8906-108599

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 131
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Quarterly Operating Results - Unaudited

12 Months Ended

Dec. 31, 2012

Quarterly Financial Information Disclosure [Abstract]

Quarterly Operating Results - Unaudited

Note 9 - Quarterly Operating Results - Unaudited

Operating results for each quarter of 2012 and 2011 are as follows:

	(Thousands of Dollars, Except per Share Data)
2012	1^st		2^nd		3^rd		4^th		Total

Operating Revenues	$	23,546	$	27,401	$	32,353	$	27,079	$	110,379
Operating Income		3,877		7,210		10,843		5,717		27,647
Net Income		1,807		3,725		6,138		2,726		14,396
Basic Earnings per Share	$	0.11	$	0.23	$	0.39	$	0.17	$	0.90
Diluted Earnings per Share	$	0.11	$	0.23	$	0.39	$	0.17	$	0.90

2011	1^st		2^nd		3^rd		4^th		Total

Operating Revenues	$	23,996	$	26,102	$	28,671	$	23,300	$	102,069
Operating Income		4,768		6,738		8,516		4,179		24,201
Net Income		2,630		3,625		5,143		2,049		13,447
Basic Earnings per Share	$	0.17	$	0.23	$	0.33	$	0.12	$	0.85
Diluted Earnings per Share	$	0.17	$	0.23	$	0.32	$	0.12	$	0.84

The information above, in the opinion of the Company, includes all adjustments consisting only of normal recurring accruals necessary for a fair presentation of such amounts. The business of the Company is subject to seasonal fluctuation with the peak period usually occurring during the summer months. The quarterly earnings per share amounts above may differ from previous filings due to the effects of rounding.

- Definition

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

+ References + Details

Organization, Summary of Significant Accounting Policies and Recent Developments (Policies)

12 Months Ended

Dec. 31, 2012

Accounting Policies [Abstract]

Organization

Certain reclassifications have been made to the prior year financial statements to conform with current period presentation.

Principles of Consolidation

System of Accounts

Regulatory Accounting

Postretirement Benefit Plans

Utility Plant

Depreciation

Source of Supply	1.15% - 3.44%	Transmission and Distribution (T&D):
Pumping	2.87% - 5.39%	T&D – Mains	1.10% - 3.13%
Water Treatment	1.65% - 7.09%	T&D – Services	2.12% - 3.16%
General Plant	2.08% - 17.84%	T&D – Other	1.61% - 4.63%

Preliminary Survey and Investigation (PS&I) Costs

Customers' Advances for Construction (CAC)

Contributions in Aid of Construction (CIAC) – CIAC include direct non-refundable contributions of water utility plant and/or cash and the portion of CAC that becomes non-refundable.

CAC and CIAC are not depreciated in accordance with regulatory requirements. In addition, these amounts reduce the investment base for purposes of setting rates.

Allowance for Funds Used During Construction (AFUDC)

	2012	2011	2010
Middlesex	7.34%	7.54%	7.54%
Tidewater	7.91%	8.24%	8.24%

Accounts Receivable

Revenues

Southern Shores is an unmetered system. Customers are billed a fixed service charge in advance at the beginning of each month and revenues are recognized as earned.

Deferred Charges and Other Assets

Income Taxes

Statements of Cash Flows

Use of Estimates

Recent Accounting Pronouncements

(q) Recent Accounting Pronouncements

Recent Developments

(r) Recent Developments

Organization, Summary of Significant Accounting Policies and Recent Developments (Tables)

12 Months Ended

Dec. 31, 2012

Accounting Policies [Abstract]

Range of depreciation rates

Source of Supply	1.15% - 3.44%	Transmission and Distribution (T&D):
Pumping	2.87% - 5.39%	T&D – Mains	1.10% - 3.13%
Water Treatment	1.65% - 7.09%	T&D – Services	2.12% - 3.16%
General Plant	2.08% - 17.84%	T&D – Other	1.61% - 4.63%

Allowance for Funds Used During Construction Rates

	2012	2011	2010
Middlesex	7.34%	7.54%	7.54%
Tidewater	7.91%	8.24%	8.24%

Rate and Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2012

Rate And Regulatory Matters Tables

Regulatory Assets

	(Thousands of Dollars)
	December 31,				Remaining
Regulatory Assets	2012		2011		Recovery Periods
Postretirement Benefits	$	53,142	$	49,735		Various
Income Taxes		17,866		17,151		Various
Rate Cases, Storm Costs, Tank Painting, and Other		1,823		416		2-9 years
Total	$	72,831	$	67,302

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Income Tax Disclosure [Abstract]

Income tax expense reconciliation

Income tax expense differs from the amount computed by applying the statutory rate on book income subject to tax for the following reasons:

	(Thousands of Dollars)
	Years Ended December 31,
	2012			2011			2010
Income Tax at Statutory Rate	$	7,420		$	6,816		$	7,224
Tax Effect of:
Utility Plant Related		(442	)		(620	)		(826	)
State Income Taxes – Net		420			305			336
Employee Benefits		(23	)		1			33
Other		8			25			19
Total Income Tax Expense	$	7,383		$	6,527		$	6,786

Income tax expense

Income tax expense is comprised of the following:

	(Thousands of Dollars)
	Years Ended December 31,
	2012			2011			2010
Current:
Federal	$	2,994		$	3,550		$	5,584
State		430			395			481
Deferred:
Federal		3,832			2,594			770
State		206			67			30
Investment Tax Credits		(79	)		(79	)		(79	)
Total Income Tax Expense	$	7,383		$	6,527		$	6,786

Deferred tax liability

The components of the net deferred tax liability are as follows:

	(Thousands of Dollars)
	December 31,
	2012			2011
Utility Plant Related	$	39,020		$	35,135
Customer Advances		(3,673	)		(3,737	)
Employee Benefits		6,523			6,342
Investment Tax Credits (ITC)		1,068			1,146
Other		(94	)		(718	)
Total Deferred Tax Liability and ITC	$	42,844		$	38,168

Commitments and Contingent Liabilities (Tables)

12 Months Ended

Dec. 31, 2012

Commitments And Contingent Liabilities Tables

Schedule of Water cost purchased

Purchased water costs are shown below:

	Years Ended December 31,
	(Millions of Dollars)
Purchased Water	2012		2011		2010
Untreated	$	2.4	$	2.4	$	2.5
Treated		3.1		2.7		2.9
Total Costs	$	5.5	$	5.1	$	5.4

Short Term Borrowings (Tables)

12 Months Ended

Dec. 31, 2012

Short Term Borrowings Tables

Informatin regarding short-term borrowings

nformation regarding the Company’s short-term borrowings for the years ended December 31, 2012 and 2011 is summarized below:

	(Millions of Dollars)
	2012			2011
Established Lines at Year-End	$	60.0		$	60.0
Maximum Amount Outstanding		29.0			24.3
Average Outstanding		25.5			20.7
Notes Payable at Year-End		28.0			24.3
Weighted Average Interest Rate		1.43	%		1.44	%
Weighted Average Interest Rate at Year-End		1.40	%		1.33	%

Capitalization (Tables)

12 Months Ended

Dec. 31, 2012

Capitalization Tables

Maturities of long term debt

The aggregate annual principal repayment obligations for all long-term debt over the next five years are shown below:

Year	(Millions of Dollars) Annual Maturities
2013	$11.1
2014	$5.2
2015	$5.3
2016	$5.4
2017	$5.5

Earnings per share

	(In Thousands, Except per Share Amounts)
	2012					2011					2010
Basic:	Income			Shares		Income			Shares		Income			Shares
Net Income	$	14,396			15,733	$	13,447			15,615	$	14,330			14,654
Preferred Dividend		(206	)				(206	)				(207	)
Earnings Applicable to Common Stock	$	14,190			15,733	$	13,241			15,615	$	14,123			14,654
Basic EPS	$	0.90				$	0.85				$	0.96
Diluted:
Earnings Applicable to Common Stock	$	14,190			15,733	$	13,241			15,615	$	14,123			14,654
$7.00 Series Dividend		97			166		97			166		97			166
$8.00 Series Dividend		56			96		56			96		56			96
Adjusted Earnings Applicable to Common Stock	$	14,343			15,995	$	13, 394			15,877	$	14,276			14,916
Diluted EPS	$	0.90				$	0.84				$	0.96

Carrying amount and estimated fair value

The carrying amount and fair value of the Company’s bonds were as follows:

	(Thousands of Dollars)
	At December 31,
	2012				2011
	Carrying		Fair		Carrying		Fair
	Amount		Value		Amount		Value
Bonds	$	91,938	$	93,556	$	86,577	$	87,283
State Revolving Bonds	$	708	$	712	$	793	$	799

- Definition

Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such certain disclosures about the financial instruments, assets, and liabilities include: (1) the fair value of the required items together with their carrying amounts (as appropriate) and (2) the methodology and assumptions used in developing such estimates of fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13476-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Topic 825
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-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13467-108611

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13433-108611

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 159
-Paragraph 19
-Subparagraph a, b, c(1), d(1)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 14
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15
-Subparagraph b-d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 159
-Paragraph 18
-Subparagraph c(2), d, e, f
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-Subparagraph a, c(1), c(2), c(3), d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 10
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2012

Employee Benefit Plans Tables

Change in projected benefit obligation and fair value of plan assets

The table below sets forth information relating to the Company’s Pension Plan and Other Benefits Plan for 2012 and 2011.

	December 31,
	(Thousands of Dollars)
	Pension Plan						Other Benefits Plan
	2012			2011			2012			2011
Change in Projected Benefit Obligation:
Beginning Balance	$	56,201		$	42,138		$	43,121		$	29,605
Service Cost		2,198			1,574			1,784			1,306
Interest Cost		2,417			2,261			1,868			1,604
Actuarial Loss		3,833			12,047			4,425			11,121
Benefits Paid		(1,832	)		(1,819	)		(590	)		(515	)
Ending Balance	$	62,817		$	56,201		$	50,608		$	43,121

Change in Fair Value of Plan Assets:
Beginning Balance	$	32,196		$	29,989		$	15,817		$	12,890
Actual Return on Plan Assets		3,879			470			1,241			177
Employer Contributions		3,661			3,556			3,940			3,265
Benefits Paid		(1,832	)		(1,819	)		(590	)		(515	)
Ending Balance	$	37,904		$	32,196		$	20,408		$	15,817

Funded Status	$	(24,913	)	$	(24,005	)	$	(30,200	)	$	(27,304	)

Amounts recognized in balance sheet

	December 31,
	(Thousands of Dollars)
	Pension Plan						Other Benefits Plan
	2012			2011			2012			2011
Amounts Recognized in the Consolidated Balance Sheets consist of:
Current Liability		(345	)		(303	)		—			—
Noncurrent Liability		(24,568	)		(23,702	)		(30,200	)		(27,304	)
Net Liability Recognized	$	(24,913	)	$	(24,005	)	$	(30,200	)	$	(27,304	)

Components of net benefit cost

	Years Ended December 31,
	(Thousands of Dollars)
	Pension Plan									Other Benefits Plan
	2012			2011			2010			2012			2011			2010
Components of Net Periodic Benefit Cost
Service Cost	$	2,198		$	1,575		$	1,396		$	1,784		$	1,306		$	1,025
Interest Cost		2,417			2,261			2,228			1,868			1,604			1,335
Expected Return on Plan Assets		(2,458	)		(2,283	)		(2,020	)		(1,258	)		(1,026	)		(759	)
Amortization of Net Transition Obligation		—			—			—			135			135			135
Amortization of Net Actuarial Loss		1,549			565			506			1,765			878			531
Amortization of Prior Service Cost		10			10			10			—			—			—
Net Periodic Benefit Cost	$	3,716		$	2,128		$	2,120		$	4,294		$	2,897		$	2,267

Amounts expected to be amortized from regulatory assets

Amounts that are expected to be amortized from Regulatory Assets into Net Periodic Benefit Cost in 2013 are as follows:

	(Thousands of Dollars)
	Pension Plan		Other Benefits Plan
Actuarial Loss	$	1,632	$	1,976
Prior Service Cost		10		—

Discount and compensation rates

	Pension Plan						Other Benefits Plan
	2012		2011		2010		2012		2011		2010
Weighted Average Assumptions:
Expected Return on Plan Assets		7.50%		7.50%		7.50%		7.50%		7.50%		7.50%
Discount Rate for:
Benefit Obligation		3.99%		4.37%		5.48%		3.99%		4.37%		5.48%
Benefit Cost		4.37%		5.48%		5.95%		4.37%		5.48%		5.95%
Compensation Increase for:
Benefit Obligation		3.00%		3.00%		3.00%		3.00%		3.00%		3.00%
Benefit Cost		3.00%		3.00%		3.00%		3.00%		3.00%		3.00%

Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates

A one-percentage point change in assumed healthcare cost trend rates would have the following effects on the Other Benefits Plan:

	(Thousands of Dollars)
	1 Percentage Point
	Increase		Decrease
Effect on Current Year’s Service and Interest Cost	$	838	$	(640	)
Effect on Projected Benefit Obligation	$	9,560	$	(7,477	)

Expected benefit payments

The following benefit payments, which reflect expected future service, are expected to be paid:

	(Thousands of Dollars)
Year	Pension Plan		Other Benefits Plan
2013	$	1,949	$	827
2014		1,938		988
2015		1,931		1,158
2016		1,951		1,321
2017		2,263		1,503
2018-2022		12,950		9,969
Totals	$	22,982	$	15,766

Allocation of plan assets

The allocation of plan assets at December 31, 2012 and 2011 by asset category is as follows

	Pension Plan						Other Benefits Plan
Asset Category	2012			2011			2012			2011			Target			Range
Equity Securities		60.9	%		61.6	%		40.3	%		37.0	%		60	%		30-65%
Debt Securities		32.9	%		31.3	%		53.0	%		57.8	%		38	%		25-70%
Cash		6.0	%		6.9	%		5.9	%		4.6	%		2	%		0-10%
Commodities		0.2	%		0.2	%		0.8	%		0.6	%		0	%		0%
Total		100.0	%		100.0	%		100.0	%		100.0	%

Fair value of plan assets

The following table presents Middlesex’s Pension Plan assets measured and recorded at fair value within the fair value hierarchy as of December 31, 2012 (amounts in thousands):

	Level 1		Level 2		Level 3		Total
Common Trust Fund-Large Cap	$	—	$	10,409	$	—	$	10,409
Mutual Funds:
Mid Cap Growth		703		—		—		703
Mid Cap Value		412		—		—		412
Foreign Small Mid Growth		255		—		—		255
Foreign Large Blend		710		—		—		710
Pacific Asis/ex-Japan Stock		164						164
Diversied Emerging Markets		222		—		—		222
Preferred Stock Index		82		—		—		82
Money Market Funds:
Cash and Cash Equivalents		2,385		747		—		3,132
Equity Securities:
Non-Financial Services		293		—		—		293
Financial Services		1,883		—		—		1,883
Utilities		1,334		—		—		1,334
Consumer Growth		1,778		—		—		1,778
Consumer Staples		931		—		—		931
Consumer Cyclicals		886		—		—		886
Industrial Resources		224		—		—		224
Capital Equipment		669		—		—		669
Technology		1,324		—		—		1,324
Energy		860		—		—		860
Corporate Bonds		—		3,575		—		3,575
Mortgage-Backed Securities (1)		—		2,570		—		2,570
Asset-Backed Securities		—		25		—		25
Agency/US/State/Municipal Debt				5,312		—		5,312
Sovereign/Non-US Debt		—		63		—		63
Commodities		88		—		—		88
Total Investments	$	15,203	$	22,701	$	—	$	37,904

The following table presents Middlesex’s Pension Plan assets measured and recorded at fair value within the fair value hierarchy as of December 31, 2011 (amounts in thousands):

	Level 1		Level 2		Level 3		Total
Common Trust Fund-Large Cap	$	—	$	7,641	$	—	$	7,641
Mutual Funds:
Mid Cap Growth		655		—		—		655
Mid Cap Value		356		—		—		356
Foreign Small Mid Growth		214		—		—		214
Foreign Large Core		97		—		—		97
Foreign Large Blend		586		—		—		586
Diversied Emerging Markets		281		—		—		281
Preferred Stock Index		74		—		—		74
Money Market Funds:
Cash and Cash Equivalents		1,389		1,281		—		2,670
Equity Securities:
Non-Financial Services		189		—		—		189
Financial Services		1,289		—		—		1,289
Utilities		1,629		—		—		1,629
Consumer Growth		1,685		—		—		1,685
Consumer Staples		956		—		—		956
Consumer Cyclicals		853		—		—		853
Industrial Resources		159		—		—		159
Capital Equipment		651		—		—		651
Technology		1,345		—		—		1,345
Energy		1,160		—		—		1,160
Other		40		—		—		40
Corporate Bonds		—		2,324		—		2,324
Mortgage-Backed Securities (1)		—		2,527		—		2,527
Asset-Backed Securities		—		27		—		27
Agency/US/State/Municipal Debt		129		4,532		—		4,661
Sovereign/Non-US Debt		—		75		—		75
Commodities		52		—		—		52
Total Investments	$	13,789	$	18,407	$	—	$	32,196

The following table presents Middlesex’s Other Benefits Plan assets measured and recorded at fair value within the fair value hierarchy as of December 31, 2012 (amounts in thousands):

	Level 1		Level 2		Level 3		Total
Mutual Funds:
Small Cap Core	$	97	$	—	$	—	$	97
Mid Cap Core		104		—		—		104
Mid Cap Growth		290		—		—		290
Mid Cap Value		446		—		—		446
Large Cap Core		5,270		—		—		5,270
Large Cap Growth		902		—		—		902
Large Cap Value				—		—		—
Foreign Small Mid Growth		303		—		—		303
Foreign Large Core		234		—		—		234
Foreign Large Growth		292		—		—		292
Diversified Emerging Markets		282		—		—		282
Preferred Stock Index		119		—		—		119
Money Market Funds:
Cash and Cash Equivalents		—		1,205		—		1,205
Agency/US/State/Municipal Debt		780		9,914		—		10,694
Commodities		170		—		—		170
Total Investments	$	9,289	$	11,119	$	—	$	20,408

The following table presents Middlesex’s Other Benefits Plan assets measured and recorded at fair value within the fair value hierarchy as of December 31, 2011 (amounts in thousands):

	Level 1		Level 2		Level 3		Total
Mutual Funds:
Small Cap Core	$	90	$	—	$	—	$	90
Mid Cap Core		48		—		—		48
Mid Cap Growth		253		—		—		253
Mid Cap Value		288		—		—		288
Large Cap Core		3,406		—		—		3,406
Large Cap Growth		398		—		—		398
Large Cap Value		349		—		—		349
Foreign Small Mid Growth		225		—		—		225
Foreign Large Core		279		—		—		279
Foreign Large Growth		247		—		—		247
Diversified Emerging Markets		163		—		—		163
Preferred Stock Index		107		—		—		107
Money Market Funds:
Cash and Cash Equivalents		—		818		—		818
Agency/US/State/Municipal Debt		424		8,622		—		9,046
Commodities		100		—		—		100
Total Investments	$	6,377	$	9,440	$	—	$	15,817

Restricted stock plan

The following table presents information on the 2008 Restricted Stock Plan:

	Shares (thousands)			Unearned Compensation (thousands)			Weighted Average Grant Price
Balance, January 1, 2010		93		$	990
Granted		14			239		$	16.97
Vested		(13	)		—
Forfeited		—			—
Amortization of Compensation Expense		—			(338	)
Balance, December 31, 2010		94		$	891
Granted		30			518		$	16.97
Vested		(15	)		—
Forfeited		(1	)		(7	)
Amortization of Compensation Expense		—			(323	)
Balance, December 31, 2011		108		$	1,079
Granted		21			408		$	19.35
Vested		(15	)		—
Forfeited		—			—
Amortization of Compensation Expense		—			(448	)
Balance, December 31, 2012		114		$	1,039

Business Segment Data (Tables)

12 Months Ended

Dec. 31, 2012

Business Segment Data Tables

Schedule of Segment Reporting Information, by Segment

	(Thousands of Dollars)
	Years Ended December 31,
Operations by Segments:	2012			2011			2010
Revenues:
Regulated	$	98,021		$	91,729		$	92,378
Non – Regulated		12,851			10,805			10,937
Inter-segment Elimination		(493	)		(465	)		(580	)
Consolidated Revenues	$	110,379		$	102,069		$	102,735

Operating Income:
Regulated	$	25,944		$	22,760		$	24,815
Non – Regulated		1,703			1,441			1,782
Consolidated Operating Income	$	27,647		$	24,201		$	26,597

Depreciation:
Regulated	$	10,241		$	9,601		$	9,093
Non – Regulated		168			145			151
Consolidated Depreciation	$	10,409		$	9,746		$	9,244

Other Income, Net:
Regulated	$	1,489		$	1,982		$	1,265
Non – Regulated		94			896			313
Inter-segment Elimination		(726	)		(729	)		(134	)
Consolidated Other Income, Net	$	857		$	2,149		$	1,444

Interest Expense:
Regulated	$	6,725		$	6,376		$	6,925
Non – Regulated		96			97			134
Inter-segment Elimination		(96	)		(97	)		(134	)
Consolidated Interest Charges	$	6,725		$	6,376		$	6,925

Income Taxes:
Regulated	$	6,579		$	5,548		$	6,004
Non – Regulated		804			979			782
Consolidated Interest Charges	$	7,383		$	6,527		$	6,786

Net Income:
Regulated	$	13,500		$	12,088		$	13,152
Non – Regulated		896			1,359			1,178
Consolidated Net Income	$	14,396		$	13,447		$	14,330

Capital Expenditures:
Regulated	$	21,149		$	23,125		$	29,344
Non – Regulated		429			437			260
Total Capital Expenditures	$	21,578		$	23,562		$	29,604

	As of December 31, 2012			As of December 31, 2011
Assets:
Regulated	$	560,165		$	539,947
Non – Regulated		11,674			10,325
Inter-segment Elimination		(10,113	)		(12,736	)
Consolidated Assets	$	561,726		$	537,536

- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References + Details

Quarterly Operating Results - Unaudited (Tables)

12 Months Ended

Dec. 31, 2012

Quarterly Financial Information Disclosure [Abstract]

Quarterly financial information

	(Thousands of Dollars, Except per Share Data)
2012	1^st		2^nd		3^rd		4^th		Total

Operating Revenues	$	23,546	$	27,401	$	32,353	$	27,079	$	110,379
Operating Income		3,877		7,210		10,843		5,717		27,647
Net Income		1,807		3,725		6,138		2,726		14,396
Basic Earnings per Share	$	0.11	$	0.23	$	0.39	$	0.17	$	0.90
Diluted Earnings per Share	$	0.11	$	0.23	$	0.39	$	0.17	$	0.90

2011	1^st		2^nd		3^rd		4^th		Total

Operating Revenues	$	23,996	$	26,102	$	28,671	$	23,300	$	102,069
Operating Income		4,768		6,738		8,516		4,179		24,201
Net Income		2,630		3,625		5,143		2,049		13,447
Basic Earnings per Share	$	0.17	$	0.23	$	0.33	$	0.12	$	0.85
Diluted Earnings per Share	$	0.17	$	0.23	$	0.32	$	0.12	$	0.84

Organization, Summary of Significant Accounting Policies and Recent Developments (Details Narrative) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Percent voting interest									50.00%
Percent of operating revenues									89.00%
Percent of total assets									98.00%
Allowance for doubtful accounts	$ 800				$ 600				$ 800	$ 600
Bad debt expense									700	700	$ 600
Operating Revenues	$ 27,079	$ 32,353	$ 27,401	$ 23,546	$ 23,300	$ 28,671	$ 26,102	$ 23,996	110,379	$ 102,069	$ 102,735
Sayreville
Operating Revenues									1,900
Hess
Operating Revenues									$ 2,600

Organization, Summary of Significant Accounting Policies and Recent Developments (Details)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Source of Supply \| Minimum
Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service	1.15%	1.15%	1.15%
Source of Supply \| Maximum
Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service	3.44%	3.44%	3.44%
Pumping \| Minimum
Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service	2.87%	2.87%	2.87%
Pumping \| Maximum
Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service	5.39%	5.39%	5.39%
Water Treatment \| Minimum
Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service	1.65%	1.65%	1.65%
Water Treatment \| Maximum
Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service	7.09%	7.09%	7.09%
General Plant \| Minimum
Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service	2.08%	2.08%	2.08%
General Plant \| Maximum
Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service	17.84%	17.84%	17.84%
T&D - Mains \| Minimum
Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service	1.10%	1.10%	1.10%
T&D - Mains \| Maximum
Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service	3.13%	3.13%	3.13%
T&D - Services \| Minimum
Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service	2.12%	2.12%	2.12%
T&D - Services \| Maximum
Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service	3.16%	3.16%	3.16%
T&D - Other \| Minimum
Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service	1.61%	1.61%	1.61%
T&D - Other \| Maximum
Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service	4.63%	4.63%	4.63%

Organization, Summary of Significant Accounting Policies and Recent Developments (Details 1)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Middlesex
Allowance for Funds Used During Construction Rates	7.34%	7.54%	7.54%
Tidewater
Allowance for Funds Used During Construction Rates	7.91%	8.24%	8.24%

Rate and Regulatory Matters (Details Narrative) - USD ($) $ in Thousands		1 Months Ended
	Mar. 03, 2012	Nov. 30, 2012	Sep. 30, 2012	Aug. 31, 2012	Jul. 31, 2012	Jun. 30, 2012	Jun. 30, 2011	Mar. 31, 2010	Dec. 31, 2012	Dec. 31, 2011
Regulatory Liabilities [Line Items]
Regulatory Liability - Cost of Utility Plant Removal									$ 8,811	$ 8,029
Acquisition premiums									$ 600
Middlesex
Regulatory Liabilities [Line Items]
Description of application request seeking increase in base rates		In November 2012, Middlesex filed a petition with the NJBPU seeking approval of foundational information (Foundational Filing) that would allow for the implementation of a Distribution System Improvement Charge (DSIC). A DSIC is a rate-mechanism that allows water utilities to recover investment in capital improvements to their water distribution system made between base rate proceedings. In February 2013, the Foundational Filing was approved by the NJBPU, which allows Middlesex to implement a DSIC rate in September 2013 to recover costs for qualifying projects that are placed in service in the six-month post-approval period. The DSIC rate is allowed to increase in three subsequent six month periods for any additional qualifying projects placed in service during those time periods. The maximum annual revenues allowed to be recovered under the approved Foundational Filing is $1.4 million.	Middlesex filed an application with the New Jersey Board of Public Utilities (NJBPU) seeking permission to establish a Purchased Water Adjustment Clause and implement a tariff rate sufficient to recover increased costs of $0.1 million to purchase untreated water from the New Jersey Water Supply Authority and treated water from a non-affiliated regulated water utility.		Middlesex filed an application with the New Jersey Board of Public Utilities (NJBPU) seeking permission to increase its base rates by approximately $11.3 million per year			In March 2010, the NJBPU granted an increase in Middlesex's annual operating revenues of 13.57%, or $7.8 million. The increase was necessitated by increased costs, as well as to provide a return on invested capital in rate base of $180.3 million based on a return on equity of 10.30%.
Increase in base rates revenue per year					$ 8,100			$ 7,800
Increase in base rates revenue per year, percent								13.57%
Originally filed base water rate increase			$ 100		11,300
Return on invested capital, rate base					$ 202,400			$ 180,300
Return on equity					10.15%			10.30%
Maximum annual revenues allowed under Foundational Filing		$ 1,400
Tidewater
Regulatory Liabilities [Line Items]
Description of application request seeking increase in base rates						Tidewater filed an application with the Delaware Public Service Commission (DEPSC) seeking permission to increase its base rates by approximately $6.9 million per year
Increase in base rates revenue per year						$ 3,900
Originally filed base water rate increase						6,900
Interim rates						2,500
Final base rates						$ 1,400
TESI
Regulatory Liabilities [Line Items]
Description of application request seeking increase in base rates						TESI filed an application with the DEPSC seeking permission to increase its base rates by approximately $0.8 million per year
Increase in base rates revenue per year						$ 600
Originally filed base water rate increase		100				800
Interim rates						$ 100
DSIC rate increase		$ 600
Pinelands Water
Regulatory Liabilities [Line Items]
Description of application request seeking increase in base rates				Pinelands Water and Pinelands Wastewater filed applications with the NJBPU seeking permission to increase base rates by approximately $0.2 million and $0.1 million per year, respectively. These requests were made as a result of capital investments Pinelands Water and New Pinelands Wastewater have made, or have committed to make, as well as increased operations and maintenance costs for both companies.
Originally filed base water rate increase				$ 200
Pinelands Wastewater
Regulatory Liabilities [Line Items]
Description of application request seeking increase in base rates				Pinelands Water and Pinelands Wastewater filed applications with the NJBPU seeking permission to increase base rates by approximately $0.2 million and $0.1 million per year, respectively. These requests were made as a result of capital investments Pinelands Water and New Pinelands Wastewater have made, or have committed to make, as well as increased operations and maintenance costs for both companies.
Originally filed base water rate increase				$ 100
Southern Shores
Regulatory Liabilities [Line Items]
Originally filed base water rate increase							$ 100
Twin Lakes
Regulatory Liabilities [Line Items]
Originally filed base water rate increase	$ 100

Rate and Regulatory Matters (Details) - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011
Regulatory Assets
Regulatory Assets	$ 72,831	$ 67,302
Postretirement Benefits
Regulatory Assets
Regulatory Assets	$ 53,142	49,735
Remaining recovery period	Various
Income Taxes
Regulatory Assets
Regulatory Assets	$ 17,866	17,151
Remaining recovery period	Various
Rate Cases, Storm Costs, Tank Painting, and Other
Regulatory Assets
Regulatory Assets	$ 1,823	$ 416
Remaining recovery period	2-9 years

Income Taxes (Details Narrative) $ in Thousands	12 Months Ended
Income Taxes (Details Narrative) $ in Thousands	Dec. 31, 2010 USD ($)
Income Tax Disclosure [Abstract]
Net tax refund after IRS examination	$ (100)

Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
Income Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Disclosure [Abstract]
Income Tax at Statutory Rate	$ 7,420	$ 6,816	$ 7,224
Tax Effect of:
Utility Plant Related	(442)	(620)	(826)
State Income Taxes - Net	420	305	336
Employee Benefits	(23)	1	33
Other	8	25	19
Income Taxes	$ 7,383	$ 6,527	$ 6,786

Income Taxes (Details 1) - USD ($) $ in Thousands	12 Months Ended
Income Taxes (Details 1) - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Current:
Federal	$ 2,994	$ 3,550	$ 5,584
State	430	395	481
Deferred:
Federal	3,832	2,594	770
State	206	67	30
Investment Tax Credits	(79)	(79)	(79)
Income Taxes	$ 7,383	$ 6,527	$ 6,786

- Definition

The component of income tax expense for the period representing amounts paid or payable (or refundable) as determined by applying the provisions of enacted federal tax law to the domestic taxable Income or Loss from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Current Tax Expense (or Benefit)
-URI http://asc.fasb.org/extlink&oid=6509736

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I.7)
-URI http://asc.fasb.org/extlink&oid=6889476&loc=d3e330036-122817

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section I
-Paragraph Question 1-7

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 45
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 289
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

+ Details

- Definition

The component of income tax expense for the period representing amounts paid or payable (or refundable) as determined by applying the provisions of enacted state and local tax law to relevant amounts of taxable Income or Loss from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I.7)
-URI http://asc.fasb.org/extlink&oid=6889476&loc=d3e330036-122817

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Current Tax Expense (or Benefit)
-URI http://asc.fasb.org/extlink&oid=6509736

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 45
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section I
-Subsection 7

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 289
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

The component of total income tax expense for the period comprised of the increase (decrease) during the period in the entity's domestic deferred tax assets and liabilities attributable to continuing operations as determined by applying the provisions of the federally enacted tax law.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Deferred Tax Expense (or Benefit)
-URI http://asc.fasb.org/extlink&oid=6510177

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I.7)
-URI http://asc.fasb.org/extlink&oid=6889476&loc=d3e330036-122817

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 8, 16, 17, 289
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section I
-Subsection 7

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 45
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

The change during the period in the entity's deferred tax assets and liabilities attributable to continuing operations as determined by applying enacted tax laws other than federal, domestic, foreign, state or local. Items affecting deferred income taxes and required to be disclosed, but not included elsewhere, would also be designated as "Other"; for example, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity and adjustments to be beginning-of-year balance of a valuation allowance because of a change in circumstance that causes a change in judgment about the realizability of the related deferred tax asset in future periods.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (g),(h)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I.7)
-URI http://asc.fasb.org/extlink&oid=6889476&loc=d3e330036-122817

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Deferred Tax Expense (or Benefit)
-URI http://asc.fasb.org/extlink&oid=6510177

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 8, 16, 17, 289
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 45
-Subparagraph g, h
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section I
-Subsection 7

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

+ Details

- Definition

The component of total income tax expense for the period comprised of the increase (decrease) in the entity's state and local deferred tax assets and liabilities attributable to continuing operations as determined by applying the provisions of the applicable enacted tax laws.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Deferred Tax Expense (or Benefit)
-URI http://asc.fasb.org/extlink&oid=6510177

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I.7)
-URI http://asc.fasb.org/extlink&oid=6889476&loc=d3e330036-122817

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 45
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 8, 16, 17, 289
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section I
-Subsection 7

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

+ Details

Income Taxes (Details 2) - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Utility Plant Related	$ 39,020	$ 35,135
Customer Advances	(3,673)	(3,737)
Employee Benefits	6,523	6,342
Investment Tax Credits (ITC)	1,068	1,146
Other	(94)	(718)
Total Deferred Tax Liability and ITC	$ 42,844	$ 38,168

- Definition

The amount as of the balance sheet date of the estimated future tax effects attributable to the difference between the tax basis of pension liabilities funded in advance and the basis of a prepaid pension asset determined in accordance with generally accepted accounting principles. The difference in basis of such costs will increase future taxable income when such basis difference reverses. Prepaid pension costs represented the cumulative employer's contributions in excess of net pension cost recognized, before the adoption of the recognition provisions of FAS 158. Under FAS 158, prepaid pension costs are no longer recognized in the statement of financial position.

+ References + Details

Commitments and Contingent Liabilities (Details Narrative) $ in Thousands	12 Months Ended
	Dec. 31, 2012 USD ($)
Commitments And Contingent Liabilities Details Narrative
Term of water and wastewater system agreement	USA-PA operates the City of Perth Amboy, NJ's water and wastewater systems under a 20-year agreement, which expires in 2018. In connection with the agreement with Perth Amboy, USA-PA entered into a 20-year subcontract with a wastewater operating company
Commitment of purchase of untreated water	Middlesex has an agreement with the NJWSA for the purchase of untreated water through November 30, 2023, which provides for an average purchase of 27 million gallons a day (mgd). Pricing is set annually by the NJWSA through a public rate making process.
Minimum treated water purchase commitment	Middlesex also has an agreement with a non-affiliated regulated water utility for the purchase of treated water. This agreement, which expires February 27, 2016, provides for the minimum purchase of 3 mgd of treated water with provisions for additional purchases.
Budgeted construction cost for construction program, next year	$ 21,700

Commitments and Contingent Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Purchased Water
Treated	$ 2,400	$ 2,400	$ 2,500
Untreated	3,100	2,700	2,900
Total Costs	$ 5,500	$ 5,100	$ 5,400

Short Term Borrowings (Details) - USD ($) $ in Thousands	12 Months Ended
Short Term Borrowings (Details) - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011
Lines Of Credit Facility
Established Lines at Year-End	$ 60,000	$ 60,000
Maximum Amount Outstanding	29,000	24,300
Weighted average daily amounts of borrowings outstanding	25,122	19,629
Notes Payable	$ 27,950	$ 24,250
Weighted average interest rates on line of credit facility (As a percentage)	1.43%	1.44%
Weighted Average Interest Rate at Year-End	1.40%	1.33%

Capitalization (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended						12 Months Ended
	Jan. 31, 2013	Dec. 31, 2012	Nov. 30, 2012	May 31, 2012	Mar. 31, 2011	Jun. 30, 2010	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Schedule of Capitalization [Line Items]
Issuance of Common Stock						$ 27,800			$ 27,928
Public offering, price per share						$ 15.21
Issuance of Common Stock in a public offering, shares						1,900,000
Authorized shares under plan		300					300
Issuance of shares under the DRP							$ 1,587	$ 1,504	1,917
Preferred stock dividends in arrears							$ 0
Repayment of first mortgage bonds			$ 57,500
Proceeds from refinance of first mortgage bonds			$ 57,500
Weighted average interest rate		4.34%					4.34%	5.13%
Long term debt, outstanding		$ 131,467					$ 131,467	$ 132,167
Deobligated principal payments							255	560
Other long term debt		47,700					47,700	49,300
Customer advances		21,990					21,990	$ 21,944
Series QQ RR SS
Schedule of Capitalization [Line Items]
Long term debt, face amount		57,600					57,600
Series QQ
Schedule of Capitalization [Line Items]
Premium on debt		2,200					2,200
Series S - W
Schedule of Capitalization [Line Items]
Repayment of first mortgage bonds		51,500
Series DD
Schedule of Capitalization [Line Items]
Repayment of first mortgage bonds	$ 6,000
New Jersey State Revolving Fund
Schedule of Capitalization [Line Items]
Long term debt, face amount				$ 3,900					$ 4,000
OOMember
Schedule of Capitalization [Line Items]
Long term debt, face amount				$ 3,000
Interest rate				0.00%
Maturity date				Aug. 01, 2031
PPMember
Schedule of Capitalization [Line Items]
Long term debt, face amount				$ 900
Interest rate, minimum				2.00%
Interest rate, maximum				5.00%
Maturity date				Aug. 01, 2031
Delaware State Revolving Fund
Schedule of Capitalization [Line Items]
Long term debt, outstanding		10,200					10,200
Delaware State Revolving Fund \| Tidewater
Schedule of Capitalization [Line Items]
Long term debt, face amount					$ 2,800
Interest rate					3.75%
Maturity date					Jul. 01, 2031
Delaware State Revolving Fund \| Southern Shores
Schedule of Capitalization [Line Items]
Long term debt, face amount					$ 1,600
Interest rate					3.75%
Maturity date					Nov. 30, 2030
New Jersey Economic Development Authority
Schedule of Capitalization [Line Items]
Long term debt, outstanding		61,400					61,400
New Jersey Environmental Infrastructure Trust
Schedule of Capitalization [Line Items]
Long term debt, outstanding		$ 31,200					$ 31,200
Nonredeemable Preferred Stock $7.00 Series
Schedule of Capitalization [Line Items]
Shares repurchased in the period							93
Convertible Preferred Stock $7.00 Series
Schedule of Capitalization [Line Items]
Shares issued upon conversion		12					12
Percentage of stock that may be redeemed in a given calander year		10.00%					10.00%
Convertible Preferred Stock $8.00 Series
Schedule of Capitalization [Line Items]
Shares issued upon conversion		13.714					13.714
Outside Director Stock Compensation Plan
Schedule of Capitalization [Line Items]
Authorized shares under plan		87,429					87,429
Common stock granted and issued under plan							5,768	3,833	1,416
Dividend Reinvestment and Common Stock Purchase Plan
Schedule of Capitalization [Line Items]
Common Stock, Shares Authorized							$ 2,300,000
Dividend Reinvestment & Common Stock Purchase Plan, cumulative shares							2,100,000

Capitalization (Details) - Series QQ RR SS	Dec. 31, 2012 USD ($)
2013	$ 11,100
2014	5,200
2015	5,300
2016	5,400
2017	$ 5,500

Capitalization (Details 1) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Basic:
Net Income	$ 2,726	$ 6,138	$ 3,725	$ 1,807	$ 2,049	$ 5,143	$ 3,625	$ 2,630	$ 14,396	$ 13,447	$ 14,330
Preferred Dividend									(206)	(206)	(207)
Earnings Applicable to Common Stock									$ 14,190	$ 13,241	$ 14,123
Weighted-average number of basic shares outstanding, shares									15,733,000	15,615,000	14,654,000
Basic EPS	$ 0.17	$ 0.39	$ 0.23	$ 0.11	$ 0.12	$ 0.33	$ 0.23	$ 0.17	$ 0.90	$ 0.85	$ 0.96
Diluted:
$7.00 Series Preferred Dividend									$ 97	$ 97	$ 97
$8.00 Series Preferred Dividend									56	56	56
Adjusted Earnings Applicable to Common Stock									$ 14,343	$ 13,394	$ 14,276
Incremental common shares attributable to $7.00 series preferred shares, shares									166	166	166
Incremental common shares attributable to $8.00 series preferred shares, shares									96	96	96
Weighted-average diluted shares outstanding, shares									15,995,000	15,877,000	14,916,000
Diluted EPS	$ 0.17	$ 0.39	$ 0.23	$ 0.11	$ 0.12	$ 0.32	$ 0.23	$ 0.17	$ 0.90	$ 0.84	$ 0.96

Capitalization (Details 2) - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011
Carrying amount
Bonds	$ 91,938	$ 86,577
SRF Bonds	708	793
Fair value
Bonds	93,556	87,283
SRF Bonds	$ 712	$ 799

Employee Benefit Plans (Details Narrative)	12 Months Ended
Employee Benefit Plans (Details Narrative)	Dec. 31, 2012 USD ($) N shares	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)
Accumulated benefit obligation	$ 52,400,000	$ 46,500,000
Increase (decrease) in annual rate per capita cost of covered healthcare benefits, next year	9.00%
Increase (decrease) in annual rate per capita cost of covered healthcare benefits, 2014-2016	1.00%
Increase (decrease) in annual rate per capita cost of covered healthcare benefits, 2017-2018	5.00%
Annual rate of increase in the per capita cost of covered healthcare benefits	5.00%
Description of 401(k)	The Company has a 401(k) defined contribution plan, which covers substantially all employees with more than 1,000 hours of service. Under the terms of the Plan, the Company matches 100% of a participant's contributions, which do not exceed 1% of a participant's compensation, plus 50% of a participant's contributions exceeding 1%, but not more than 6%. The Company's matching contributions were $0.5 million for each of the years ended December 31, 2012, 2011 and 2010. For those employees hired after March 31, 2007 and still actively employed on December 31, 2012, the Company approved and will fund discretionary contribution of $0.2 million, which was based on 5.0% of eligible 2012 compensation. For the years ended December 31, 2011 and 2010, the Company made discretionary contributions of $0.2 million and $0.1 million, respectively, for those qualifying employees.
Number of hours required to participate in contribution plan \| N	1,000
Percent of participants contributions matched by company, below one percent of participants compensation	100.00%
Percent of participants contributions matched by company, above one percent of participants compensation	50.00%
Threshold percentage of participants compensation at which matching decreases	1.00%
Matching contributions, percent	6.00%
Matching contributions	$ 500,000	500,000	$ 500,000
Discretionary contributions, percent	5.00%
Discretionary contributions	$ 200,000	200,000	100,000
Escrow account maintained for 2008 restricted stock plan \| shares	100
Maximum number of shares authorized for grant \| shares	300
Number of shares authorized for grant, unissued \| shares	200
Fair value of vested restricted shares	$ 300,000	$ 200,000	$ 200,000
Pension Benefit Plan
Allocation of plan assets	100.00%	100.00%
Benfit plan, Cash contributions	$ 3,700,000
Other Benefits Plan
Allocation of plan assets	100.00%	100.00%
Benfit plan, Cash contributions	$ 3,900,000
Equity Securities \| Pension Benefit Plan
Allocation of plan assets	60.90%	61.60%
Equity Securities \| Other Benefits Plan
Allocation of plan assets	40.30%	37.00%
Middlesex \| Equity Securities
Allocation of plan assets	2.00%	2.30%
Common stock in plan, value	$ 800,000	$ 700,000

Employee Benefit Plans (Details) - USD ($) $ in Thousands	12 Months Ended
Employee Benefit Plans (Details) - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Pension Benefit Plan
Change in Projected Benefit Obligation:
Beginning Balance	$ 56,201	$ 42,138
Service Cost	2,198	1,574	$ 1,396
Interest Cost	2,417	2,261	2,228
Actuarial Loss	3,833	12,047
Benefits Paid	(1,832)	(1,819)
Ending Balance	62,817	56,201	42,138
Other Benefits Plan
Change in Projected Benefit Obligation:
Beginning Balance	43,121	29,605
Service Cost	1,784	1,306
Interest Cost	1,868	1,604
Actuarial Loss	4,425	11,121
Benefits Paid	(590)	(515)
Ending Balance	$ 50,608	$ 43,121	$ 29,605

- Definition

1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Projected Benefit Obligation
-URI http://asc.fasb.org/extlink&oid=6522206

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Accumulated Postretirement Benefit Obligation
-URI http://asc.fasb.org/extlink&oid=6503904

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 6
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph E1
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents a periodic decrease to the plan obligations and a decrease to plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 60
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 30
-Glossary Benefits
-URI http://asc.fasb.org/extlink&oid=6506267

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 60
-Glossary Benefits
-URI http://asc.fasb.org/extlink&oid=6506309

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)(6)
-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Postretirement Benefits
-URI http://asc.fasb.org/extlink&oid=6521376

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)(5)
-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS106-2
-Paragraph 22
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 87
-Paragraph 264
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 106
-Paragraph 518
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph a, b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.

+ References + Details

- Definition

The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Service Cost (Component of Net Periodic Pension Cost)
-URI http://asc.fasb.org/extlink&oid=6525008

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 87
-Paragraph 264
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph a, h
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 106
-Paragraph 518
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Employee Benefit Plans (Details 1) - USD ($) $ in Thousands	12 Months Ended
Employee Benefit Plans (Details 1) - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011
Pension Benefit Plan
Change in Fair Value of Plan Assets:
Fair Value of plan assets, Beginning Balance	$ 32,196	$ 29,989
Actual Return on Plan Assets	3,879	470
Employer Contributions	3,661	3,556
Benefits Paid	(1,832)	(1,819)
Fair Value of plan assets, Ending Balance	37,904	32,196
Funded Status	(24,913)	(24,005)
Other Benefits Plan
Change in Fair Value of Plan Assets:
Fair Value of plan assets, Beginning Balance	15,817	12,890
Actual Return on Plan Assets	1,241	177
Employer Contributions	3,940	3,265
Benefits Paid	(590)	(515)
Fair Value of plan assets, Ending Balance	20,408	15,817
Funded Status	$ (30,200)	$ (27,304)

- Definition

The difference between fair value of plan assets at the end of the period and the fair value at the beginning of the period, adjusted for contributions and payments of benefits during the period, and after adjusting for taxes and other expenses, as applicable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Actual Return on Plan Assets (Component of Net Periodic Postretirement Benefit Cost)
-URI http://asc.fasb.org/extlink&oid=6504192

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Actual Return on Plan Assets (Component of Net Periodic Pension Cost)
-URI http://asc.fasb.org/extlink&oid=6504226

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 87
-Paragraph 264
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph d(iv)(b)(i)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 106
-Paragraph 518
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

+ References + Details

Employee Benefit Plans (Details 2) - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011
Noncurrent Liability	$ 54,768	$ 51,006
Pension Benefit Plan
Current Liability	(345)	(303)
Noncurrent Liability	(24,568)	(23,702)
Net Liability Recognized	(24,913)	(24,005)
Other Benefits Plan
Current Liability
Noncurrent Liability	(30,200)	(27,304)
Net Liability Recognized	$ (30,200)	$ (27,304)

- Definition

This represents the entire liability recognized in the balance sheet that is associated with the defined benefit plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=21915240&loc=d3e1703-114919

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.15)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e2417-114920

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.15)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e2410-114920

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 3
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 6
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

This represents the noncurrent liability for underfunded plans recognized in the balance sheet that is associated with the defined benefit pension plans and other postretirement defined benefit plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e2417-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=21915240&loc=d3e1703-114919

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e2410-114920

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.24)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 6
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 3
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Employee Benefit Plans (Details 3) - USD ($) $ in Thousands	12 Months Ended
Employee Benefit Plans (Details 3) - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Pension Benefit Plan
Periodic costs for employee retirement benefit plans
Service Cost	$ 2,198	$ 1,574	$ 1,396
Interest Cost	2,417	2,261	2,228
Expected Return on Assets	(2,458)	(2,283)	(2,020)
Amortization of Unrecognized Losses
Amortization of Unrecognized Prior Service Cost	1,549	565	506
Amortization of Transition Obligation	10	10	10
Net Periodic Benefit Cost	3,716	2,128	2,120
Other Benefits Plan
Periodic costs for employee retirement benefit plans
Service Cost	1,784	1,306
Interest Cost	1,868	1,604
Expected Return on Assets	(1,258)	(1,026)
Amortization of Unrecognized Losses	135	135
Amortization of Unrecognized Prior Service Cost	1,765	878
Amortization of Transition Obligation
Net Periodic Benefit Cost	$ 4,294	$ 2,897
Other Benefit Plan
Periodic costs for employee retirement benefit plans
Service Cost			1,025
Interest Cost			1,335
Expected Return on Assets			(759)
Amortization of Unrecognized Losses			135
Amortization of Unrecognized Prior Service Cost			531
Amortization of Transition Obligation
Net Periodic Benefit Cost			$ 2,267

Employee Benefit Plans (Details 4) $ in Thousands	12 Months Ended
Employee Benefit Plans (Details 4) $ in Thousands	Dec. 31, 2012 USD ($)
Pension Benefit Plan
Expected amortized actuarial Loss	$ 1,632
Expected amortized Prior Service Cost	10
Other Benefits Plan
Expected amortized actuarial Loss	1,976
Expected amortized Prior Service Cost

Employee Benefit Plans (Details 5)	12 Months Ended
Employee Benefit Plans (Details 5)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Pension Benefit Plan
Weighted Average Assumptions:
Expected Return on Plan Assets	7.50%	7.50%	7.50%
Discount Rate for:
Benefit Obligation	3.99%	4.37%	5.48%
Benefit Cost	4.37%	5.48%	5.95%
Compensation Increase for:
Benefit Obligation	3.00%	3.00%	3.00%
Benefit Cost	3.00%	3.00%	3.00%
Other Benefits Plan
Weighted Average Assumptions:
Expected Return on Plan Assets	7.50%	7.50%
Discount Rate for:
Benefit Obligation	3.99%	4.37%
Benefit Cost	4.37%	5.48%
Compensation Increase for:
Benefit Obligation	3.00%	3.00%
Benefit Cost	3.00%	3.00%
Other Benefit Plan
Weighted Average Assumptions:
Expected Return on Plan Assets			7.50%
Discount Rate for:
Benefit Obligation			5.48%
Benefit Cost			5.95%
Compensation Increase for:
Benefit Obligation			3.00%
Benefit Cost			3.00%

Employee Benefit Plans (Details 6) $ in Thousands	12 Months Ended
Employee Benefit Plans (Details 6) $ in Thousands	Dec. 31, 2012 USD ($)
Pension Benefit Plan
Effect on Current Year's Service and Interest Cost	$ 838
Effect on Projected Benefit Obligation	9,560
Other Benefits Plan
Effect on Current Year's Service and Interest Cost	(640)
Effect on Projected Benefit Obligation	$ (7,477)

Employee Benefit Plans (Details 7) $ in Thousands	Dec. 31, 2012 USD ($)
Pension Benefit Plan
2013	$ 1,949
2014	1,938
2015	1,931
2016	1,951
2017	2,263
2018-2022	12,950
Totals	22,982
Other Benefits Plan
2013	827
2014	988
2015	1,158
2016	1,321
2017	1,503
2018-2022	9,969
Totals	$ 15,766

Employee Benefit Plans (Details 8)	12 Months Ended
Employee Benefit Plans (Details 8)	Dec. 31, 2012	Dec. 31, 2011
Equity Securities
Target plan allocations	60.00%
Target plan allocations, minimum	30.00%
Target plan allocations, maximum	65.00%
Debt Securities
Target plan allocations	38.00%
Target plan allocations, minimum	25.00%
Target plan allocations, maximum	70.00%
Cash
Target plan allocations	2.00%
Target plan allocations, minimum	0.00%
Target plan allocations, maximum	10.00%
Commodities
Target plan allocations	0.00%
Target plan allocations, minimum	0.00%
Target plan allocations, maximum	0.00%
Pension Benefit Plan
Allocation of plan assets	100.00%	100.00%
Pension Benefit Plan \| Equity Securities
Allocation of plan assets	60.90%	61.60%
Pension Benefit Plan \| Debt Securities
Allocation of plan assets	32.90%	31.30%
Pension Benefit Plan \| Cash
Allocation of plan assets	6.00%	6.90%
Pension Benefit Plan \| Commodities
Allocation of plan assets	0.20%	0.20%
Other Benefits Plan
Allocation of plan assets	100.00%	100.00%
Other Benefits Plan \| Equity Securities
Allocation of plan assets	40.30%	37.00%
Other Benefits Plan \| Debt Securities
Allocation of plan assets	53.00%	57.80%
Other Benefits Plan \| Cash
Allocation of plan assets	5.90%	4.60%
Other Benefits Plan \| Commodities
Allocation of plan assets	0.80%	0.60%

Employee Benefit Plans (Details 9) - Pension Benefit Plan - USD ($)
$ in Thousands

Dec. 31, 2012

Dec. 31, 2011

Fair Value of plan assets, Ending Balance

$ 37,904

$ 32,196

Fair Value, Level 2 | Common Trust Fund-Large Cap

Fair Value of plan assets, Ending Balance

10,409

7,641

Fair Value, Level 2 | Money Market Funds - Cash and Cash Equivalents

Fair Value of plan assets, Ending Balance

747

1,281

Fair Value, Level 2 | Corporate Bonds

Fair Value of plan assets, Ending Balance

3,575

2,324

Fair Value, Level 2 | Mortgage-Backed Securities

Fair Value of plan assets, Ending Balance

^[1]

2,570

2,527

Fair Value, Level 2 | Asset-Backed Securities

Fair Value of plan assets, Ending Balance

Fair Value, Level 2 | Agency/US/State/Municipal Debt

Fair Value of plan assets, Ending Balance

5,312

4,532

Fair Value, Level 2 | Sovereign/Non-US Debt

Fair Value of plan assets, Ending Balance

Fair Value, Level 2 | Investments

Fair Value of plan assets, Ending Balance

22,701

18,407

Fair Value, Total | Common Trust Fund-Large Cap

Fair Value of plan assets, Ending Balance

10,409

7,641

Fair Value, Total | Mutual Funds - Mid Cap Growth

Fair Value of plan assets, Ending Balance

703

655

Fair Value, Total | Mutual Funds - Mid Cap Value

Fair Value of plan assets, Ending Balance

412

356

Fair Value, Total | Mutual Funds - Foreign Small Mid Growth

Fair Value of plan assets, Ending Balance

255

214

Fair Value, Total | Mutual Funds - Foreign Large Blend

Fair Value of plan assets, Ending Balance

710

586

Fair Value, Total | Mutual Funds - Pacific Asis/ex-Japan Stock

Fair Value of plan assets, Ending Balance

164

Fair Value, Total | Mutual Funds - Diversied Emerging Markets

Fair Value of plan assets, Ending Balance

222

281

Fair Value, Total | Mutual Funds - Preferred Stock Index

Fair Value of plan assets, Ending Balance

Fair Value, Total | Money Market Funds - Cash and Cash Equivalents

Fair Value of plan assets, Ending Balance

3,132

2,670

Fair Value, Total | Equity Securities - Non-Financial Services

Fair Value of plan assets, Ending Balance

293

189

Fair Value, Total | Equity Securities - Financial Services

Fair Value of plan assets, Ending Balance

1,883

1,289

Fair Value, Total | Equity Securities - Utilities

Fair Value of plan assets, Ending Balance

1,334

1,629

Fair Value, Total | Equity Securities - Consumer Growth

Fair Value of plan assets, Ending Balance

1,778

1,685

Fair Value, Total | Equity Securities - Consumer Staples

Fair Value of plan assets, Ending Balance

931

956

Fair Value, Total | Equity Securities - Consumer Cyclicals

Fair Value of plan assets, Ending Balance

886

853

Fair Value, Total | Equity Securities - Industrial Resources

Fair Value of plan assets, Ending Balance

224

159

Fair Value, Total | Equity Securities - Capital Equipment

Fair Value of plan assets, Ending Balance

669

651

Fair Value, Total | Equity Securities - Technology

Fair Value of plan assets, Ending Balance

1,324

1,345

Fair Value, Total | Equity Securities - Energy

Fair Value of plan assets, Ending Balance

860

1,160

Fair Value, Total | Corporate Bonds

Fair Value of plan assets, Ending Balance

3,575

2,324

Fair Value, Total | Mortgage-Backed Securities

Fair Value of plan assets, Ending Balance

^[1]

2,570

2,527

Fair Value, Total | Asset-Backed Securities

Fair Value of plan assets, Ending Balance

Fair Value, Total | Agency/US/State/Municipal Debt

Fair Value of plan assets, Ending Balance

5,312

4,661

Fair Value, Total | Sovereign/Non-US Debt

Fair Value of plan assets, Ending Balance

Fair Value, Total | CommoditiesMember

Fair Value of plan assets, Ending Balance

Fair Value, Total | Investments

Fair Value of plan assets, Ending Balance

37,904

32,196

Fair Value, Level 1 | Mutual Funds - Mid Cap Growth

Fair Value of plan assets, Ending Balance

703

655

Fair Value, Level 1 | Mutual Funds - Mid Cap Value

Fair Value of plan assets, Ending Balance

412

356

Fair Value, Level 1 | Mutual Funds - Foreign Small Mid Growth

Fair Value of plan assets, Ending Balance

255

214

Fair Value, Level 1 | Mutual Funds - Foreign Large Blend

Fair Value of plan assets, Ending Balance

710

586

Fair Value, Level 1 | Mutual Funds - Pacific Asis/ex-Japan Stock

Fair Value of plan assets, Ending Balance

164

Fair Value, Level 1 | Mutual Funds - Diversied Emerging Markets

Fair Value of plan assets, Ending Balance

222

281

Fair Value, Level 1 | Mutual Funds - Preferred Stock Index

Fair Value of plan assets, Ending Balance

Fair Value, Level 1 | Money Market Funds - Cash and Cash Equivalents

Fair Value of plan assets, Ending Balance

2,385

1,389

Fair Value, Level 1 | Equity Securities - Non-Financial Services

Fair Value of plan assets, Ending Balance

293

189

Fair Value, Level 1 | Equity Securities - Financial Services

Fair Value of plan assets, Ending Balance

1,883

1,289

Fair Value, Level 1 | Equity Securities - Utilities

Fair Value of plan assets, Ending Balance

1,334

1,629

Fair Value, Level 1 | Equity Securities - Consumer Growth

Fair Value of plan assets, Ending Balance

1,778

1,685

Fair Value, Level 1 | Equity Securities - Consumer Staples

Fair Value of plan assets, Ending Balance

931

956

Fair Value, Level 1 | Equity Securities - Consumer Cyclicals

Fair Value of plan assets, Ending Balance

886

853

Fair Value, Level 1 | Equity Securities - Industrial Resources

Fair Value of plan assets, Ending Balance

224

159

Fair Value, Level 1 | Equity Securities - Capital Equipment

Fair Value of plan assets, Ending Balance

669

651

Fair Value, Level 1 | Equity Securities - Technology

Fair Value of plan assets, Ending Balance

1,324

1,345

Fair Value, Level 1 | Equity Securities - Energy

Fair Value of plan assets, Ending Balance

860

1,160

Fair Value, Level 1 | Agency/US/State/Municipal Debt

Fair Value of plan assets, Ending Balance

129

Fair Value, Level 1 | CommoditiesMember

Fair Value of plan assets, Ending Balance

Fair Value, Level 1 | Investments

Fair Value of plan assets, Ending Balance

$ 15,203

$ 13,789

[1]	(1) Mortgage-backed securities represent AAA rated securities and substantially all of the asset-backed securities are highly-rated (Standard & Poor's rating of AA+), secured primarily by credit card, auto loan, and home equity receivables.

Employee Benefit Plans (Details 9a) - Pension Benefit Plan - USD ($)
$ in Thousands

Dec. 31, 2012

Dec. 31, 2011

Fair Value of plan assets, Ending Balance

$ 37,904

$ 32,196

Fair Value, Level 2 | Common Trust Fund-Large Cap

Fair Value of plan assets, Ending Balance

10,409

7,641

Fair Value, Level 2 | Money Market Funds - Cash and Cash Equivalents

Fair Value of plan assets, Ending Balance

747

1,281

Fair Value, Level 2 | Corporate Bonds

Fair Value of plan assets, Ending Balance

3,575

2,324

Fair Value, Level 2 | Mortgage-Backed Securities

Fair Value of plan assets, Ending Balance

^[1]

2,570

2,527

Fair Value, Level 2 | Asset-Backed Securities

Fair Value of plan assets, Ending Balance

Fair Value, Level 2 | Agency/US/State/Municipal Debt

Fair Value of plan assets, Ending Balance

5,312

4,532

Fair Value, Level 2 | Sovereign/Non-US Debt

Fair Value of plan assets, Ending Balance

Fair Value, Level 2 | Investments

Fair Value of plan assets, Ending Balance

22,701

18,407

Fair Value, Total | Common Trust Fund-Large Cap

Fair Value of plan assets, Ending Balance

10,409

7,641

Fair Value, Total | Mutual Funds - Mid Cap Growth

Fair Value of plan assets, Ending Balance

703

655

Fair Value, Total | Mutual Funds - Mid Cap Value

Fair Value of plan assets, Ending Balance

412

356

Fair Value, Total | Mutual Funds - Foreign Small Mid Growth

Fair Value of plan assets, Ending Balance

255

214

Fair Value, Total | Mutual Funds - Foreign Large Core

Fair Value of plan assets, Ending Balance

Fair Value, Total | Mutual Funds - Foreign Large Blend

Fair Value of plan assets, Ending Balance

710

586

Fair Value, Total | Mutual Funds - Diversied Emerging Markets

Fair Value of plan assets, Ending Balance

222

281

Fair Value, Total | Mutual Funds - Preferred Stock Index

Fair Value of plan assets, Ending Balance

Fair Value, Total | Money Market Funds - Cash and Cash Equivalents

Fair Value of plan assets, Ending Balance

3,132

2,670

Fair Value, Total | Equity Securities - Non-Financial Services

Fair Value of plan assets, Ending Balance

293

189

Fair Value, Total | Equity Securities - Financial Services

Fair Value of plan assets, Ending Balance

1,883

1,289

Fair Value, Total | Equity Securities - Utilities

Fair Value of plan assets, Ending Balance

1,334

1,629

Fair Value, Total | Equity Securities - Consumer Growth

Fair Value of plan assets, Ending Balance

1,778

1,685

Fair Value, Total | Equity Securities - Consumer Staples

Fair Value of plan assets, Ending Balance

931

956

Fair Value, Total | Equity Securities - Consumer Cyclicals

Fair Value of plan assets, Ending Balance

886

853

Fair Value, Total | Equity Securities - Industrial Resources

Fair Value of plan assets, Ending Balance

224

159

Fair Value, Total | Equity Securities - Capital Equipment

Fair Value of plan assets, Ending Balance

669

651

Fair Value, Total | Equity Securities - Technology

Fair Value of plan assets, Ending Balance

1,324

1,345

Fair Value, Total | Equity Securities - Energy

Fair Value of plan assets, Ending Balance

860

1,160

Fair Value, Total | Equity Securities - Other

Fair Value of plan assets, Ending Balance

Fair Value, Total | Corporate Bonds

Fair Value of plan assets, Ending Balance

3,575

2,324

Fair Value, Total | Mortgage-Backed Securities

Fair Value of plan assets, Ending Balance

^[1]

2,570

2,527

Fair Value, Total | Asset-Backed Securities

Fair Value of plan assets, Ending Balance

Fair Value, Total | Agency/US/State/Municipal Debt

Fair Value of plan assets, Ending Balance

5,312

4,661

Fair Value, Total | Sovereign/Non-US Debt

Fair Value of plan assets, Ending Balance

Fair Value, Total | CommoditiesMember

Fair Value of plan assets, Ending Balance

Fair Value, Total | Investments

Fair Value of plan assets, Ending Balance

37,904

32,196

Fair Value, Level 1 | Mutual Funds - Mid Cap Growth

Fair Value of plan assets, Ending Balance

703

655

Fair Value, Level 1 | Mutual Funds - Mid Cap Value

Fair Value of plan assets, Ending Balance

412

356

Fair Value, Level 1 | Mutual Funds - Foreign Small Mid Growth

Fair Value of plan assets, Ending Balance

255

214

Fair Value, Level 1 | Mutual Funds - Foreign Large Core

Fair Value of plan assets, Ending Balance

Fair Value, Level 1 | Mutual Funds - Foreign Large Blend

Fair Value of plan assets, Ending Balance

710

586

Fair Value, Level 1 | Mutual Funds - Diversied Emerging Markets

Fair Value of plan assets, Ending Balance

222

281

Fair Value, Level 1 | Mutual Funds - Preferred Stock Index

Fair Value of plan assets, Ending Balance

Fair Value, Level 1 | Money Market Funds - Cash and Cash Equivalents

Fair Value of plan assets, Ending Balance

2,385

1,389

Fair Value, Level 1 | Equity Securities - Non-Financial Services

Fair Value of plan assets, Ending Balance

293

189

Fair Value, Level 1 | Equity Securities - Financial Services

Fair Value of plan assets, Ending Balance

1,883

1,289

Fair Value, Level 1 | Equity Securities - Utilities

Fair Value of plan assets, Ending Balance

1,334

1,629

Fair Value, Level 1 | Equity Securities - Consumer Growth

Fair Value of plan assets, Ending Balance

1,778

1,685

Fair Value, Level 1 | Equity Securities - Consumer Staples

Fair Value of plan assets, Ending Balance

931

956

Fair Value, Level 1 | Equity Securities - Consumer Cyclicals

Fair Value of plan assets, Ending Balance

886

853

Fair Value, Level 1 | Equity Securities - Industrial Resources

Fair Value of plan assets, Ending Balance

224

159

Fair Value, Level 1 | Equity Securities - Capital Equipment

Fair Value of plan assets, Ending Balance

669

651

Fair Value, Level 1 | Equity Securities - Technology

Fair Value of plan assets, Ending Balance

1,324

1,345

Fair Value, Level 1 | Equity Securities - Energy

Fair Value of plan assets, Ending Balance

860

1,160

Fair Value, Level 1 | Equity Securities - Other

Fair Value of plan assets, Ending Balance

Fair Value, Level 1 | Agency/US/State/Municipal Debt

Fair Value of plan assets, Ending Balance

129

Fair Value, Level 1 | CommoditiesMember

Fair Value of plan assets, Ending Balance

Fair Value, Level 1 | Investments

Fair Value of plan assets, Ending Balance

$ 15,203

$ 13,789

[1]	(1) Mortgage-backed securities represent AAA rated securities and substantially all of the asset-backed securities are highly-rated (Standard & Poor's rating of AA+), secured primarily by credit card, auto loan, and home equity receivables.

Employee Benefit Plans (Details 9b) - Other Benefits Plan - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011
Fair Value of plan assets, Ending Balance	$ 20,408	$ 15,817
Fair Value, Level 1 \| Mutual Funds - Small Cap Core
Fair Value of plan assets, Ending Balance	97	90
Fair Value, Level 1 \| Mutual Funds - Mid Cap Core
Fair Value of plan assets, Ending Balance	104	48
Fair Value, Level 1 \| Mutual Funds - Mid Cap Growth
Fair Value of plan assets, Ending Balance	290	253
Fair Value, Level 1 \| Mutual Funds - Mid Cap Value
Fair Value of plan assets, Ending Balance	446	288
Fair Value, Level 1 \| Mutual Funds - Large Cap Core
Fair Value of plan assets, Ending Balance	5,270	3,406
Fair Value, Level 1 \| Mutual Funds - Large Cap Growth
Fair Value of plan assets, Ending Balance	902	398
Fair Value, Level 1 \| Mutual Funds - Large Cap Value
Fair Value of plan assets, Ending Balance		349
Fair Value, Level 1 \| Mutual Funds - Foreign Small Mid Growth
Fair Value of plan assets, Ending Balance	303	225
Fair Value, Level 1 \| Mutual Funds - Foreign Large Core
Fair Value of plan assets, Ending Balance	234	279
Fair Value, Level 1 \| Mutual Funds - Foreign Large Growth
Fair Value of plan assets, Ending Balance	292	247
Fair Value, Level 1 \| Mutual Funds - Diversied Emerging Markets
Fair Value of plan assets, Ending Balance	282	163
Fair Value, Level 1 \| Mutual Funds - Preferred Stock Index
Fair Value of plan assets, Ending Balance	119	107
Fair Value, Level 1 \| Agency/US/State/Municipal Debt
Fair Value of plan assets, Ending Balance	780	424
Fair Value, Level 1 \| CommoditiesMember
Fair Value of plan assets, Ending Balance	170	100
Fair Value, Level 1 \| Investments
Fair Value of plan assets, Ending Balance	9,289	6,377
Fair Value, Total \| Mutual Funds - Small Cap Core
Fair Value of plan assets, Ending Balance	97	90
Fair Value, Total \| Mutual Funds - Mid Cap Core
Fair Value of plan assets, Ending Balance	104	48
Fair Value, Total \| Mutual Funds - Mid Cap Growth
Fair Value of plan assets, Ending Balance	290	253
Fair Value, Total \| Mutual Funds - Mid Cap Value
Fair Value of plan assets, Ending Balance	446	288
Fair Value, Total \| Mutual Funds - Large Cap Core
Fair Value of plan assets, Ending Balance	5,270	3,406
Fair Value, Total \| Mutual Funds - Large Cap Growth
Fair Value of plan assets, Ending Balance	902	398
Fair Value, Total \| Mutual Funds - Large Cap Value
Fair Value of plan assets, Ending Balance		349
Fair Value, Total \| Mutual Funds - Foreign Small Mid Growth
Fair Value of plan assets, Ending Balance	303	225
Fair Value, Total \| Mutual Funds - Foreign Large Core
Fair Value of plan assets, Ending Balance	234	279
Fair Value, Total \| Mutual Funds - Foreign Large Growth
Fair Value of plan assets, Ending Balance	292	247
Fair Value, Total \| Mutual Funds - Diversied Emerging Markets
Fair Value of plan assets, Ending Balance	282	163
Fair Value, Total \| Mutual Funds - Preferred Stock Index
Fair Value of plan assets, Ending Balance	119	107
Fair Value, Total \| Money Market Funds - Cash and Cash Equivalents
Fair Value of plan assets, Ending Balance	1,205	81
Fair Value, Total \| Agency/US/State/Municipal Debt
Fair Value of plan assets, Ending Balance	10,694	9,046
Fair Value, Total \| CommoditiesMember
Fair Value of plan assets, Ending Balance	170	100
Fair Value, Total \| Investments
Fair Value of plan assets, Ending Balance	20,408	15,817
Fair Value, Level 2 \| Money Market Funds - Cash and Cash Equivalents
Fair Value of plan assets, Ending Balance	1,205	818
Fair Value, Level 2 \| Agency/US/State/Municipal Debt
Fair Value of plan assets, Ending Balance	9,914	8,622
Fair Value, Level 2 \| Investments
Fair Value of plan assets, Ending Balance	$ 11,119	$ 9,440

Employee Benefit Plans (Details 9c) - Other Benefits Plan - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011
Fair Value of plan assets, Ending Balance	$ 20,408	$ 15,817
Fair Value, Level 1 \| Mutual Funds - Small Cap Core
Fair Value of plan assets, Ending Balance	97	90
Fair Value, Level 1 \| Mutual Funds - Mid Cap Core
Fair Value of plan assets, Ending Balance	104	48
Fair Value, Level 1 \| Mutual Funds - Mid Cap Growth
Fair Value of plan assets, Ending Balance	290	253
Fair Value, Level 1 \| Mutual Funds - Mid Cap Value
Fair Value of plan assets, Ending Balance	446	288
Fair Value, Level 1 \| Mutual Funds - Large Cap Core
Fair Value of plan assets, Ending Balance	5,270	3,406
Fair Value, Level 1 \| Mutual Funds - Large Cap Growth
Fair Value of plan assets, Ending Balance	902	398
Fair Value, Level 1 \| Mutual Funds - Large Cap Value
Fair Value of plan assets, Ending Balance		349
Fair Value, Level 1 \| Mutual Funds - Foreign Small Mid Growth
Fair Value of plan assets, Ending Balance	303	225
Fair Value, Level 1 \| Mutual Funds - Foreign Large Core
Fair Value of plan assets, Ending Balance	234	279
Fair Value, Level 1 \| Mutual Funds - Foreign Large Growth
Fair Value of plan assets, Ending Balance	292	247
Fair Value, Level 1 \| Mutual Funds - Diversied Emerging Markets
Fair Value of plan assets, Ending Balance	282	163
Fair Value, Level 1 \| Mutual Funds - Preferred Stock Index
Fair Value of plan assets, Ending Balance	119	107
Fair Value, Level 1 \| Agency/US/State/Municipal Debt
Fair Value of plan assets, Ending Balance	780	424
Fair Value, Level 1 \| CommoditiesMember
Fair Value of plan assets, Ending Balance	170	100
Fair Value, Level 1 \| Investments
Fair Value of plan assets, Ending Balance	9,289	6,377
Fair Value, Total \| Mutual Funds - Small Cap Core
Fair Value of plan assets, Ending Balance	97	90
Fair Value, Total \| Mutual Funds - Mid Cap Core
Fair Value of plan assets, Ending Balance	104	48
Fair Value, Total \| Mutual Funds - Mid Cap Growth
Fair Value of plan assets, Ending Balance	290	253
Fair Value, Total \| Mutual Funds - Mid Cap Value
Fair Value of plan assets, Ending Balance	446	288
Fair Value, Total \| Mutual Funds - Large Cap Core
Fair Value of plan assets, Ending Balance	5,270	3,406
Fair Value, Total \| Mutual Funds - Large Cap Growth
Fair Value of plan assets, Ending Balance	902	398
Fair Value, Total \| Mutual Funds - Large Cap Value
Fair Value of plan assets, Ending Balance		349
Fair Value, Total \| Mutual Funds - Foreign Small Mid Growth
Fair Value of plan assets, Ending Balance	303	225
Fair Value, Total \| Mutual Funds - Foreign Large Core
Fair Value of plan assets, Ending Balance	234	279
Fair Value, Total \| Mutual Funds - Foreign Large Growth
Fair Value of plan assets, Ending Balance	292	247
Fair Value, Total \| Mutual Funds - Diversied Emerging Markets
Fair Value of plan assets, Ending Balance	282	163
Fair Value, Total \| Mutual Funds - Preferred Stock Index
Fair Value of plan assets, Ending Balance	119	107
Fair Value, Total \| Money Market Funds - Cash and Cash Equivalents
Fair Value of plan assets, Ending Balance	1,205	81
Fair Value, Total \| Agency/US/State/Municipal Debt
Fair Value of plan assets, Ending Balance	10,694	9,046
Fair Value, Total \| CommoditiesMember
Fair Value of plan assets, Ending Balance	170	100
Fair Value, Total \| Investments
Fair Value of plan assets, Ending Balance	20,408	15,817
Fair Value, Level 2 \| Money Market Funds - Cash and Cash Equivalents
Fair Value of plan assets, Ending Balance	1,205	818
Fair Value, Level 2 \| Agency/US/State/Municipal Debt
Fair Value of plan assets, Ending Balance	9,914	8,622
Fair Value, Level 2 \| Investments
Fair Value of plan assets, Ending Balance	$ 11,119	$ 9,440

Employee Benefit Plans (Details 10) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Employee Benefit Plans Details 10
Balance, beginning - shares	108	94	93
Granted - shares	21	30	14
Vested - shares	(15)	(15)	(13)
Forfeited - shares		(1)
Amortization of Compensation Expense - shares
Balance, ending - shares	114	108	94
Balance, beginning - Unearned compensation	$ 1,079	$ 891	$ 990
Granted - Unearned compensation	408	518	239
Vested - Unearned compensation
Forfeited - Unearned compensation		(7)
Amortization of Compensation Expense - Unearned compensation	(448)	(323)	(338)
Balance, ending - Unearned compensation	$ 1,039	$ 1,079	$ 891
Granted - Weighted average grant price	$ 19.35	$ 16.97	$ 16.97

Business Segment Data (Details) $ in Thousands	3 Months Ended								12 Months Ended
Business Segment Data (Details) $ in Thousands	Dec. 31, 2012 USD ($)	Sep. 30, 2012 USD ($)	Jun. 30, 2012 USD ($)	Mar. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Sep. 30, 2011 USD ($)	Jun. 30, 2011 USD ($)	Mar. 31, 2011 USD ($)	Dec. 31, 2012 USD ($) N	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments \| N									2
Operating Revenues	$ 27,079	$ 32,353	$ 27,401	$ 23,546	$ 23,300	$ 28,671	$ 26,102	$ 23,996	$ 110,379	$ 102,069	$ 102,735
Operating Income	5,717	10,843	7,210	3,877	4,179	8,516	6,738	4,768	27,647	24,201	26,597
Depreciation									10,409	9,746	9,244
Total Other Income, net									857	2,149	1,444
Interest Charges									6,725	6,376	6,925
Income Taxes									7,383	6,527	6,786
Net Income	2,726	$ 6,138	$ 3,725	$ 1,807	2,049	$ 5,143	$ 3,625	$ 2,630	14,396	13,447	14,330
Capital Expenditures									21,578	23,562	29,604
Assets	561,726				537,536				561,726	537,536
Regulated
Segment Reporting Information [Line Items]
Operating Revenues									98,021	91,729	92,378
Operating Income									25,944	22,760	24,815
Depreciation									10,241	9,601	9,093
Total Other Income, net									1,489	1,982	1,265
Interest Charges									6,725	6,376	6,925
Income Taxes									6,579	5,548	6,004
Net Income									13,500	12,088	13,152
Capital Expenditures									21,149	23,125	29,344
Assets	560,165				539,947				560,165	539,947
Non - Regulated
Segment Reporting Information [Line Items]
Operating Revenues									12,851	10,805	10,937
Operating Income									1,703	1,441	1,782
Depreciation									168	145	151
Total Other Income, net									94	896	313
Interest Charges									96	97	134
Income Taxes									804	979	782
Net Income									896	1,359	1,178
Capital Expenditures									429	437	260
Assets	11,674				10,325				11,674	10,325
Inter-segment Elimination
Segment Reporting Information [Line Items]
Operating Revenues									(493)	(465)	(580)
Total Other Income, net									(726)	(729)	(134)
Interest Charges									(96)	(97)	$ (134)
Assets	$ (10,113)				$ (12,736)				$ (10,113)	$ (12,736)

Quarterly Operating Results - Unaudited (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Quarterly Operating Results - Unaudited Details
Operating Revenues	$ 27,079	$ 32,353	$ 27,401	$ 23,546	$ 23,300	$ 28,671	$ 26,102	$ 23,996	$ 110,379	$ 102,069	$ 102,735
Operating Income	5,717	10,843	7,210	3,877	4,179	8,516	6,738	4,768	27,647	24,201	26,597
Net Income	$ 2,726	$ 6,138	$ 3,725	$ 1,807	$ 2,049	$ 5,143	$ 3,625	$ 2,630	$ 14,396	$ 13,447	$ 14,330
Basic	$ 0.17	$ 0.39	$ 0.23	$ 0.11	$ 0.12	$ 0.33	$ 0.23	$ 0.17	$ 0.90	$ 0.85	$ 0.96
Diluted	$ 0.17	$ 0.39	$ 0.23	$ 0.11	$ 0.12	$ 0.32	$ 0.23	$ 0.17	$ 0.90	$ 0.84	$ 0.96

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.21)
-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 55
-Paragraph 52
-URI http://asc.fasb.org/extlink&oid=16381557&loc=d3e4984-109258

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.19)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.23)
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 18
-Article 7

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 36, 37, 38
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 20
-Article 5

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 21
-Article 9

+ Details

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References + Details

- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 19
-URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569616-111683

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 55
-Paragraph 4K
-URI http://asc.fasb.org/extlink&oid=18733213&loc=SL4591552-111686

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (a),(c)
-URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 55
-Paragraph 4J
-URI http://asc.fasb.org/extlink&oid=18733213&loc=SL4591551-111686

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 29
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph c(1)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 5
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph A1, A4, A5
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Label	Element	Value
AllowanceForFundsUsedDuringConstruction	MSEX_AllowanceForFundsUsedDuringConstruction	$ 359,000