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CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)
In Thousands, except Per Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Operating revenues      
Water sales $ 61,846 $ 63,607 $ 57,564
Other utility operating revenue 3,253 3,169 3,302
Non-utility operating revenue 3,974 3,787 4,204
Total operating revenues 69,073 70,563 65,070
Operating expenses      
Utility operating expenses 34,509 34,117 32,300
Non-utility operating expenses 2,121 2,100 3,148
Depreciation and amortization 8,251 7,930 7,410
State and federal income taxes      
Current 1,725 1,940 106
Deferred 3,863 4,676 4,548
Property and other taxes 4,120 3,945 3,822
Total operating expenses 54,589 54,708 51,334
Operating income 14,484 15,855 13,736
Other income, net      
Allowance for funds used during construction (AFUDC) 324 323 163
Miscellaneous 548 713 136
Total other income 872 1,036 299
Income before interest charges 15,356 16,891 14,035
Interest charges 7,055 7,045 7,289
Net income applicable to common stock $ 8,301 $ 9,846 $ 6,746
Income per common share:      
Basic (in dollars per share) $ 0.95 $ 1.14 $ 0.83
Diluted (in dollars per share) $ 0.94 $ 1.13 $ 0.83
Weighted average common shares outstanding:      
Basic (in shares) 8,774 8,666 8,122
Diluted (in shares) 8,836 8,717 8,160
Cash dividends per share of common stock (in dollars per share) $ 0.8229 $ 0.7913 $ 0.7626