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Earnings Per Common Share Attributable to Avista Corp. Shareholders | 9 Months Ended
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Sep. 30, 2020
Earnings Per Share [Abstract] |
EARNINGS PER COMMON SHARE ATTRIBUTABLE TO AVISTA CORP. SHAREHOLDERS | NOTE 15. EARNINGS PER COMMON SHARE ATTRIBUTABLE TO AVISTA CORP. SHAREHOLDERS The following table presents the computation of basic and diluted earnings per common share attributable to Avista Corp. shareholders for the three and nine months ended September 30 (in thousands, except per share amounts):
|  | Three months ended September 30, |  |  | Nine months ended September 30, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to Avista Corp. shareholders |  | $ | 4,876 |  |  | $ | 5,090 |  |  | $ | 70,753 |  |  | $ | 146,203 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average number of common shares outstanding-basic |  |  | 68,194 |  |  |  | 66,265 |  |  |  | 67,638 |  |  |  | 65,964 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Performance and restricted stock awards |  |  | 143 |  |  |  | 86 |  |  |  | 131 |  |  |  | 86 |
Weighted-average number of common shares outstanding-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 |
There were no shares excluded from the calculation because they were antidilutive.

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