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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Operating revenues |  |  |
Water sales | $ 73,058 | $ 70,587 | $ 68,932
Other utility operating revenue | 4,177 | 3,816 | 3,694
Non-utility operating revenue | 5,000 | 4,686 | 4,398
Total operating revenues | 82,235 | 79,089 | 77,024
Operating expenses |  |  |
Utility operating expenses | 38,277 | 35,658 | 36,148
Non-utility operating expenses | 2,777 | 2,602 | 2,305
Depreciation and amortization | 9,555 | 9,188 | 8,837
State and federal income taxes (benefit) expense |  |  |
Current | (929) | 2,849 | 2,667
Deferred | 8,224 | 5,482 | 5,117
Property and other taxes | 4,731 | 4,491 | 4,368
Total operating expenses | 62,635 | 60,270 | 59,442
Operating income | 19,600 | 18,819 | 17,582
Other income, net |  |  |
Allowance for funds used during construction (AFUDC) | 334 | 222 | 249
Miscellaneous income | 226 | 557 | 472
Total other income | 560 | 779 | 721
Income before interest charges | 20,160 | 19,598 | 18,303
Interest charges | 6,177 | 6,644 | 6,998
Net income applicable to common stock | $ 13,983 | $ 12,954 | $ 11,305
Income per common share: |  |  |
Basic (in dollars per share) | $ 1.52 | $ 1.42 | $ 1.26
Diluted (in dollars per share) | $ 1.51 | $ 1.41 | $ 1.26
Weighted average common shares outstanding: |  |  |
Basic (in shares) | 9,175 | 9,098 | 8,960
Diluted (in shares) | 9,242 | 9,161 | 9,005
Cash dividends paid per share of common stock (in dollars per share) | $ 0.9269 | $ 0.8997 | $ 0.8733

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