CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 9,506us-gaap_NetIncomeLoss	$ 8,301us-gaap_NetIncomeLoss	$ 9,846us-gaap_NetIncomeLoss
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	8,673	8,251	7,930
Deferred income taxes, net	7,255	3,843	4,191
Stock compensation	135	123	108
AFUDC, equity portion	(212)	(208)	(205)
Changes in assets and liabilities:
Accounts receivable, net of allowance for doubtful accounts	147	457	(757)
Income taxes receivable	(2,613)us-gaap_IncreaseDecreaseInIncomeTaxes	(334)us-gaap_IncreaseDecreaseInIncomeTaxes	252us-gaap_IncreaseDecreaseInIncomeTaxes
Unbilled operating revenues	(305)	(12)	639
Materials and supplies	(405)	(132)	130
Prepaid property taxes	90	(163)	(35)
Prepaid expenses and other	(390)	59	(179)
Other deferred assets	(172)	(139)	(266)
Regulatory assets	(307)	50	341
Accounts payable	(357)	641	715
Accrued expenses	(2,197)	280	1,177
Accrued interest	374	(11)	(85)
Customer deposits and other, net	(832)	81	(348)
Postretirement benefit obligation	(41)	(65)	(81)
NET CASH PROVIDED BY OPERATING ACTIVITIES	18,349	21,022	23,373
CASH FLOWS USED IN INVESTING ACTIVITIES
Capital expenditures (net of AFUDC, equity portion)	(23,730)	(21,188)	(20,546)
Proceeds from sale of assets	35	33	29
NET CASH USED IN INVESTING ACTIVITIES	(23,695)	(21,155)	(20,517)
CASH FLOWS FROM FINANCING ACTIVITIES
Net repayments under lines of credit agreements	8,159us-gaap_ProceedsFromRepaymentsOfDebt	(385)us-gaap_ProceedsFromRepaymentsOfDebt	(1,023)us-gaap_ProceedsFromRepaymentsOfDebt
(Decrease) increase in overdraft payable	(605)	(4)	385
Net advances and contributions in aid of construction	3,808	5,701	3,629
Change in deferred debt issuance costs	120us-gaap_PaymentsOfDebtIssuanceCosts	120us-gaap_PaymentsOfDebtIssuanceCosts	119us-gaap_PaymentsOfDebtIssuanceCosts
Net proceeds from issuance of common stock	1,651	2,439	2,079
Dividends paid	(7,523)us-gaap_PaymentsOfDividends	(7,207)us-gaap_PaymentsOfDividends	(6,850)us-gaap_PaymentsOfDividends
Issuance of long-term debt	689	385	729
Principal repayments of long-term debt	(1,132)us-gaap_RepaymentsOfLongTermDebt	(1,111)us-gaap_RepaymentsOfLongTermDebt	(1,618)us-gaap_RepaymentsOfLongTermDebt
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	5,167	(62)	(2,550)
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(179)	(195)	306
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	422	617	311
CASH AND CASH EQUIVALENTS AT END OF YEAR	243	422	617
Supplemental Disclosures of Cash Flow Information:
Utility plant received as construction advances and contributions	1,491	948	1,904
Contractual amounts of contributions in aid of construction due from developers included in accounts receivable	456	349	629
Contractual amounts of contributions in aid of construction received from developers previously included in accounts receivable	361	505	602
Supplemental Disclosures of Cash Flow Information:
Interest paid	7,019us-gaap_InterestPaid	7,066us-gaap_InterestPaid	7,255us-gaap_InterestPaid
Income taxes paid	$ 1,615us-gaap_IncomeTaxesPaid	$ 2,014us-gaap_IncomeTaxesPaid	$ 312us-gaap_IncomeTaxesPaid

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Total increase in earnings in the period representing the cost of equity (based on the assumed rate of return) used to finance construction of regulated assets, which is expected to be recovered through rate adjustments..

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