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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Operating revenues        
Water sales $ 20,045 $ 19,680 $ 55,228 $ 53,440
Other utility operating revenue 1,036 976 3,075 2,752
Non-utility operating revenue 1,275 1,172 3,744 3,480
Total operating revenues 22,356 21,828 62,047 59,672
Operating expenses        
Utility operating expenses 10,070 9,292 28,564 26,603
Non-utility operating expenses 736 698 2,085 1,924
Depreciation and amortization 2,377 2,270 7,024 6,835
State and federal income taxes 2,546 2,498 6,403 6,473
Property and other taxes 1,173 1,125 3,537 3,371
Total operating expenses 16,902 15,883 47,613 45,206
Operating income 5,454 5,945 14,434 14,466
Other income, net        
Allowance for funds used during construction (AFUDC) 83 87 229 160
Miscellaneous (expense) income (62) (26) 230 598
Income before interest charges 5,475 6,006 14,893 15,224
Interest charges 1,533 1,646 4,614 4,996
Net income applicable to common stock $ 3,942 $ 4,360 $ 10,279 $ 10,228
Income per common share:        
Basic (in dollars per share) $ 0.43 $ 0.48 $ 1.12 $ 1.13
Diluted (in dollars per share) $ 0.42 $ 0.48 $ 1.11 $ 1.12
Weighted average common shares outstanding:        
Basic (in shares) 9,191 9,112 9,164 9,090
Diluted (in shares) 9,286 9,177 9,262 9,154
Cash dividends paid per share of common stock (in dollars per share) $ 0.2317 $ 0.2249 $ 0.6917 $ 0.6714