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CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Utility revenues: |  |  |
Utility revenues, exclusive of alternative revenue programs | $ 1,445,000 | $ 1,324,091 | $ 1,323,524
Alternative revenue programs | (6,635) | (3,814) | 9,614
Total utility revenues | 1,438,365 | 1,320,277 | 1,333,138
Non-utility revenues | 571 | 1,614 | 12,484
Total operating revenues | 1,438,936 | 1,321,891 | 1,345,622
Utility operating expenses: |  |  |
Resource costs | 497,123 | 398,509 | 439,817
Other operating expenses | 366,125 | 354,614 | 345,212
Merger transaction costs |  |  | 19,675
Depreciation and amortization | 231,915 | 223,507 | 205,365
Taxes other than income taxes | 109,353 | 106,501 | 105,652
Non-utility operating expenses: |  |  |
Other operating expenses | 5,927 | 5,344 | 18,883
Depreciation and amortization | 261 | 716 | 629
Total operating expenses | 1,210,704 | 1,089,191 | 1,135,233
Income from operations | 228,232 | 232,700 | 210,389
Interest expense | 105,731 | 104,348 | 103,012
Interest expense to affiliated trusts | 421 | 713 | 1,342
Capitalized interest | (3,987) | (4,083) | (4,174)
Merger termination fee |  |  | (103,000)
Other income-net | (33,298) | (4,817) | (14,928)
Income before income taxes | 159,365 | 136,539 | 228,137
Income tax expense | 12,031 | 7,051 | 31,374
Net income | 147,334 | 129,488 | 196,763
Net loss attributable to noncontrolling interests |  |  | (216)
Net income attributable to Avista Corp. shareholders | $ 147,334 | $ 129,488 | $ 196,979
Weighted-average common shares outstanding (thousands), basic | 69,951 | 67,962 | 66,205
Weighted-average common shares outstanding (thousands), diluted | 70,085 | 68,102 | 66,329
Earnings per common share attributable to Avista Corp. shareholders: |  |  |
Basic | $ 2.11 | $ 1.91 | $ 2.98
Diluted | $ 2.10 | $ 1.90 | $ 2.97

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