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Earnings Per Share
3 Months Ended
Mar. 31, 2022
Earnings Per Share [Abstract]  
Earnings Per Share Earnings Per Share
The following table presents the calculation of Pinnacle West’s basic and diluted earnings per share (in thousands, except per share amounts):
 Three Months Ended March 31,
 20222021
Net income attributable to common shareholders$16,956 $35,641 
Weighted average common shares outstanding — basic
113,102 112,829 
Net effect of dilutive securities:
Contingently issuable performance shares and restricted stock units
193 264 
Weighted average common shares outstanding — diluted
113,295 113,093 
Earnings per weighted-average common share outstanding
Net income attributable to common shareholders — basic
$0.15 $0.32 
Net income attributable to common shareholders — diluted
$0.15 $0.32