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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Operating revenues        
Water sales $ 19,680 $ 18,831 $ 53,440 $ 52,343
Other utility operating revenue 976 861 2,752 2,618
Non-utility operating revenue 1,172 1,084 3,480 3,313
Total operating revenues 21,828 20,776 59,672 58,274
Operating expenses        
Utility operating expenses 9,292 9,036 26,603 26,198
Non-utility operating expenses 698 578 1,924 1,705
Depreciation and amortization 2,270 2,196 6,835 6,597
State and federal income taxes 2,498 2,497 6,473 6,452
Property and other taxes 1,125 1,075 3,371 3,270
Total operating expenses 15,883 15,382 45,206 44,222
Operating income 5,945 5,394 14,466 14,052
Other income, net        
Allowance for funds used during construction (AFUDC) 87 86 160 153
Miscellaneous (26) (28) 598 521
Income before interest charges 6,006 5,452 15,224 14,726
Interest charges 1,646 1,753 4,996 5,256
Net income applicable to common stock $ 4,360 $ 3,699 $ 10,228 $ 9,470
Income per common share:        
Basic (in dollars per share) $ 0.48 $ 0.41 $ 1.13 $ 1.06
Diluted (in dollars per share) $ 0.48 $ 0.41 $ 1.12 $ 1.06
Weighted average common shares outstanding:        
Basic (in shares) 9,112 8,960 9,090 8,935
Diluted (in shares) 9,177 9,000 9,154 8,972
Cash dividends paid per share of common stock (in dollars per share) $ 0.2249 $ 0.2183 $ 0.6714 $ 0.6517