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EARNINGS PER SHARE: Earnings Per Share Level 3 (Tables)
 12 Months Ended
Dec. 31, 2019
Earnings Per Share, Basic and Diluted [Abstract]  
Schedule of Earnings Per Share, Diluted
The following table presents the computation of IDACORP’s basic and diluted earnings per share for the years ended December 31, 2019, 2018, and 2017 (in thousands, except for per share amounts):
 
 
Year Ended December 31,
 
 
2019
 
2018
 
2017
Numerator:
 
 

 
 

 
 

Net income attributable to IDACORP, Inc.
 
$
232,854

 
$
226,801

 
$
212,419

Denominator:
 
 

 
 

 
 
Weighted-average common shares outstanding - basic
 
50,502

 
50,432

 
50,361

Effect of dilutive securities
 
35

 
78

 
63

Weighted-average common shares outstanding - diluted
 
50,537

 
50,510

 
50,424

Basic earnings per share
 
$
4.61

 
$
4.50

 
$
4.22

Diluted earnings per share
 
$
4.61

 
$
4.49

 
$
4.21