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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Operating revenues        
Water sales $ 17,353 $ 15,921 $ 48,597 $ 43,520
Other utility operating revenue 719 751 2,166 2,208
Non-utility operating revenue 929 1,058 2,848 3,269
Total Operating Revenues 19,001 17,730 53,611 48,997
Operating expenses        
Utility operating expenses 9,155 8,313 25,391 24,527
Non-utility operating expenses 515 709 1,562 2,424
Depreciation and amortization 1,957 1,897 5,880 5,530
State and federal income taxes 1,904 1,505 5,435 3,459
Property and other taxes 975 939 2,965 2,882
Total Operating Expenses 14,506 13,363 41,233 38,822
Operating income 4,495 4,367 12,378 10,175
Other income (expense), net        
Allowance for funds used during construction (AFUDC) 133 67 253 140
Miscellaneous (36) (387) 748 185
Income before interest charges 4,592 4,047 13,379 10,500
Interest charges 1,746 1,809 5,280 5,500
Net income $ 2,846 $ 2,238 $ 8,099 $ 5,000
Income per common share:        
Basic (in dollars per share) $ 0.33 $ 0.26 $ 0.94 $ 0.63
Diluted (in dollars per share) $ 0.33 $ 0.26 $ 0.93 $ 0.63
Weighted average common shares outstanding        
Basic (in shares) 8,681 8,547 8,653 7,960
Diluted (in shares) 8,752 8,579 8,699 8,000
Cash dividends per share of common stock $ 0.1978 $ 0.1902 $ 0.5886 $ 0.5696