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Earnings Per Common Share Attributable to Avista Corporation Shareholders | 12 Months Ended
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Dec. 31, 2021
Earnings Per Share [Abstract] |
Earnings Per Common Share Attributable to Avista Corporation Shareholders | NOTE 21. EARNINGS PER COMMON SHARE ATTRIB UTABLE TO AVISTA CORPORATION SHAREHOLDERS The following table presents the computation of basic and diluted earnings per common share attributable to Avista Corp. shareholders for the years ended December 31 (in thousands, except per share amounts):
|  | 2021 |  |  | 2020 |  |  | 2019 |
Numerator: |  |  |  |  |  |  |  |  |
Net income attributable to Avista Corp. shareholders |  | $ | 147,334 |  |  | $ | 129,488 |  |  | $ | 196,979 |
Denominator: |  |  |  |  |  |  |  |  |
Weighted-average number of common shares outstanding-basic |  |  | 69,951 |  |  |  | 67,962 |  |  |  | 66,205 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |
Performance and restricted stock awards |  |  | 134 |  |  |  | 140 |  |  |  | 124 |
Weighted-average number of common shares outstanding-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 |
There were no shares excluded from the calculation because they were antidilutive.

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