Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 4,145	$ 4,597
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,563	2,446
Increase in deferred income taxes	1,065	1,851
Other	110	255
Changes in assets and liabilities:
Increase in accounts receivable and unbilled revenues	(141)	(171)
(Increase) decrease in recoverable income taxes	197	(661)
Increase in materials and supplies, prepaid expenses, regulatory and other assets	(506)	(821)
Increase (decrease) in accounts payable, accrued compensation and benefits, accrued expenses, deferred employee benefits, and other deferred credits	(707)	1,103
Increase (decrease) in accrued interest and taxes	38	(3)
Net cash provided by operating activities	6,764	8,596
CASH FLOWS FROM INVESTING ACTIVITIES:
Utility plant additions, including debt portion of allowance for funds used during construction of $23 in 2012 and $28 in 2011	(5,553)	(4,124)
Decrease in notes receivable	17	20
Net cash used in investing activities	(5,536)	(4,104)
CASH FLOWS FROM FINANCING ACTIVITIES:
Customers' advances for construction and contributions in aid of construction	159	33
Repayments of customer advances	(146)	(137)
Repayments of long-term debt	(21)	(85)
Issuance of common stock	1,092	841
Dividends paid	(3,419)	(3,327)
Net cash used in financing activities	(2,335)	(2,675)
Net change in cash and cash equivalents	(1,107)	1,817
Cash and cash equivalents at beginning of period	4,006	1,327
Cash and cash equivalents at end of period	2,899	3,144
Cash paid during the period for:
Interest, net of amounts capitalized	2,599	2,605
Income taxes	$ 844	$ 838