CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 6,746	$ 7,620	$ 7,262
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	7,410	7,032	6,556
Deferred income taxes, net	4,466	3,480	4,600
Stock compensation	120	111	98
AFUDC, equity portion	(100)	(111)	(227)
Changes in assets and liabilities:
Accounts receivable, net of allowance for doubtful accounts	215	290	(603)
Unbilled operating revenues	(22)	(96)	79
Materials and supplies	(237)	(26)	(73)
Prepaid property taxes	(33)	(38)	(103)
Prepaid expenses and other	1,110	(1,336)	(813)
Other deferred assets	(254)	(111)	(159)
Regulatory assets	(124)	(92)	45
Accounts payable	(617)	(295)	(860)
Accrued expenses	127	1,441	(2,183)
Accrued interest	34	(172)	110
Customer deposits and other, net	451	693	(92)
Postretirement benefit obligation	(70)	(212)	(75)
NET CASH PROVIDED BY OPERATING ACTIVITIES	19,222	18,178	13,562
CASH FLOWS USED IN INVESTING ACTIVITIES
Capital expenditures (net of AFUDC, equity portion)	(15,787)	(19,703)	(17,576)
Proceeds from sale of assets	55	61	43
NET CASH USED IN INVESTING ACTIVITIES	(15,732)	(19,642)	(17,533)
CASH FLOWS FROM FINANCING ACTIVITIES
Net (repayments) borrowings under lines of credit agreements	(17,331)	3,948	4,837
(Decrease) increase in overdraft payable	(375)	(286)	242
Net advances and contributions in aid of construction	1,640	2,179	1,854
Change in deferred debt issuance costs	72	36	114
Net proceeds from issuance of common stock	17,176	1,918	1,399
Dividends paid	(6,191)	(5,677)	(5,379)
Issuance of long-term debt	3,195	0	0
Principal repayments of long-term debt	(1,544)	(949)	(1,516)
NET CASH (USED IN)PROVIDED BY FINANCING ACTIVITIES	(3,358)	1,169	1,551
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	132	(295)	(2,420)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	179	474	2,894
CASH AND CASH EQUIVALENTS AT END OF YEAR	311	179	474
Supplemental Disclosures of Cash Flow Information:
Utility plant received as construction advances and contributions	706	376	845
Contractual amounts of contributions in aid of construction due from developers included in accounts receivable	627	509	678
Contractual amounts of contributions in aid of construction received from developers included in accounts receivable	509	630	0
Supplemental Disclosures of Cash Flow Information:
Interest paid	7,255	7,467	7,107
Income taxes paid	$ 312	$ 1,942	$ 350