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Earnings Per Common Share Attributable To Avista Corporation (Tables)
 9 Months Ended
Sep. 30, 2019
Earnings Per Share [Abstract]  
Computations Of Earnings Per Share
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.