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Earnings Per Common Share Attributable To Avista Corporation | 9 Months Ended
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Sep. 30, 2019
Earnings Per Share [Abstract] |
Earnings Per Common Share Attributable To Avista Corporation Shareholders | 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,
| 2019 |  | 2018 |  | 2019 |  | 2018
Numerator: |  |  |  |  |  |  |
Net income attributable to Avista Corp. shareholders | $ | 5,090 |  |  | $ | 10,119 |  |  | $ | 146,203 |  |  | $ | 90,586 |
Denominator: |  |  |  |  |  |  |
Weighted-average number of common shares outstanding-basic | 66,265 |  |  | 65,688 |  |  | 65,964 |  |  | 65,668 |
Effect of dilutive securities: |  |  |  |  |  |  |
Performance and restricted stock awards | 86 |  |  | 338 |  |  | 86 |  |  | 312 |
Weighted-average number of common shares outstanding-diluted | 66,351 |  |  | 66,026 |  |  | 66,050 |  |  | 65,980 |
Earnings per common share attributable to Avista Corp. shareholders: |  |  |  |  |  |  |
Basic | $ | 0.08 |  |  | $ | 0.15 |  |  | $ | 2.22 |  |  | $ | 1.38 |
Diluted | $ | 0.08 |  |  | $ | 0.15 |  |  | $ | 2.21 |  |  | $ | 1.37 |
There were no shares excluded from the calculation because they were antidilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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