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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Operating revenues        
Water sales $ 18,248 $ 17,323 $ 35,183 $ 33,760
Other utility operating revenue 1,020 912 2,039 1,777
Non-utility operating revenue 1,234 1,160 2,469 2,308
Total operating revenues 20,502 19,395 39,691 37,845
Operating expenses        
Utility operating expenses 9,588 8,766 18,494 17,312
Non-utility operating expenses 662 590 1,349 1,226
Depreciation and amortization 2,329 2,249 4,648 4,564
State and federal income taxes 1,763 2,023 3,857 3,975
Property and other taxes 1,170 1,098 2,364 2,246
Total operating expenses 15,512 14,726 30,712 29,323
Operating income 4,990 4,669 8,979 8,522
Other income, net        
Allowance for funds used during construction (AFUDC) 76 49 146 72
Miscellaneous (expense) income (290) (31) 293 625
Income before interest charges 4,776 4,687 9,418 9,219
Interest charges 1,525 1,646 3,081 3,349
Net income applicable to common stock $ 3,251 $ 3,041 $ 6,337 $ 5,870
Income per common share:        
Basic (in dollars per share) $ 0.35 $ 0.33 $ 0.69 $ 0.65
Diluted (in dollars per share) $ 0.35 $ 0.33 $ 0.69 $ 0.64
Weighted average common shares outstanding:        
Basic (in shares) 9,163 9,092 9,149 9,079
Diluted (in shares) 9,235 9,155 9,220 9,142
Cash dividends paid per share of common stock (in dollars per share) $ 0.2317 $ 0.2249 $ 0.4600 $ 0.4465