CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Income Statement [Abstract]
Operating Revenues	$ 18,540	$ 15,989
Operating Expenses
Operation and Maintenance	9,635	8,010
Depreciation	2,387	1,872
Income Taxes	979	1,102
Taxes Other Than Income Taxes	1,988	1,645
Total Operating Expenses	14,989	12,629
Net Operating Revenues	3,551	3,360
Other Utility Income, Net of Taxes	176	178
Total Utility Operating Income	3,727	3,538
Other Income (Deductions), Net of Taxes
Non-Water Sales Earnings	350	193
Allowance for Funds Used During Construction	56	31
Other	(143)	(134)
Total Other Income, Net of Taxes	263	90
Interest and Debt Expense
Interest on Long-Term Debt	1,920	1,149
Other Interest Charges	77	105
Amortization of Debt Expense	83	106
Total Interest and Debt Expense	2,080	1,360
Net Income	1,910	2,268
Preferred Stock Dividend Requirement	9	9
Net Income Applicable to Common Stock	$ 1,901	$ 2,259
Weighted Average Common Shares Outstanding:
Basic (in shares)	8,651	8,579
Diluted (in shares)	8,781	8,694
Earnings Per Common Share:
Basic (in dollars per share)	$ 0.22	$ 0.26
Diluted (in dollars per share)	$ 0.22	$ 0.26
Dividends Per Common Share (in dollars per share)	$ 0.2375	$ 0.2325