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CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Utility revenues: |  |  |  |
Utility revenues, exclusive of alternative revenue programs | $ 276,351 | $ 276,683 | $ 944,146 | $ 958,750
Alternative revenue programs | (3,972) | 6,038 | (4,023) | 11,105
Total utility revenues | 272,379 | 282,721 | 940,123 | 969,855
Non-utility revenues | 267 | 1,049 | 1,345 | 11,208
Total operating revenues | 272,646 | 283,770 | 941,468 | 981,063
Utility operating expenses: |  |  |  |
Resource costs | 78,785 | 98,324 | 276,297 | 324,110
Other operating expenses | 85,551 | 80,112 | 266,251 | 251,810
Merger transaction costs |  |  |  | 19,675
Depreciation and amortization | 53,953 | 50,052 | 169,282 | 154,445
Taxes other than income taxes | 24,016 | 23,455 | 79,736 | 78,306
Non-utility operating expenses: |  |  |  |
Other operating expenses | 1,697 | 1,450 | 3,716 | 15,137
Depreciation and amortization | 146 | 134 | 569 | 498
Total operating expenses | 244,148 | 253,527 | 795,851 | 843,981
Income from operations | 28,498 | 30,243 | 145,617 | 137,082
Interest expense | 25,812 | 25,859 | 77,784 | 77,021
Interest expense to affiliated trusts | 128 | 334 | 606 | 1,042
Capitalized interest | (1,009) | (1,089) | (2,979) | (3,118)
Merger termination fee |  |  |  | (103,000)
Other expense (income)-net | (2,168) | 180 | (2,019) | (8,995)
Income before income taxes | 5,735 | 4,959 | 72,225 | 174,132
Income tax expense (benefit) | 859 | (131) | 1,472 | 28,145
Net income | 4,876 | 5,090 | 70,753 | 145,987
Net loss attributable to noncontrolling interests |  |  |  | (216)
Net income attributable to Avista Corp. shareholders | $ 4,876 | $ 5,090 | $ 70,753 | $ 146,203
Weighted-average common shares outstanding (thousands), basic | 68,194 | 66,265 | 67,638 | 65,964
Weighted-average common shares outstanding (thousands), diluted | 68,337 | 66,351 | 67,769 | 66,050
Earnings per common share attributable to Avista Corp. shareholders: |  |  |  |
Basic | $ 0.07 | $ 0.08 | $ 1.05 | $ 2.22
Diluted | $ 0.07 | $ 0.08 | $ 1.04 | $ 2.21

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