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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Operating revenues    
Water sales $ 14,567 $ 15,044
Other utility operating revenue 786 735
Non-utility operating revenue 974 919
Total Operating Revenues 16,327 16,698
Operating expenses    
Utility operating expenses 8,831 7,929
Non-utility operating expenses 539 498
Depreciation and amortization 2,041 1,960
State and federal income taxes 1,111 1,688
Property and other taxes 1,067 1,033
Total Operating Expenses 13,589 13,108
Operating income 2,738 3,590
Other income (expense), net    
Allowance for funds used during construction (AFUDC) 67 34
Miscellaneous 582 653
Income before interest charges 3,387 4,277
Interest charges 1,747 1,772
Net income $ 1,640 $ 2,505
Income per common share:    
Basic (in dollars per share) $ 0.19 $ 0.29
Diluted (in dollars per share) $ 0.19 $ 0.29
Weighted average common shares outstanding    
Basic (in shares) 8,725 8,626
Diluted (in shares) 8,794 8,663
Cash dividends per share of common stock $ 0.2027 $ 0.1930