Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2016

Earnings Per Share [Abstract]

Schedule of earnings per weighted average common share outstanding

The following table presents the calculation of Pinnacle West’s basic and diluted earnings per share for the three months ended March 31, 2016 and 2015 (in thousands, except per share amounts):

	Three Months Ended   March 31,
	2016		2015
Net income attributable to common shareholders	$	4,453	$	16,122
Weighted average common shares outstanding — basic	111,296		110,916
Net effect of dilutive securities:
Contingently issuable performance shares and restricted stock units	551		461
Weighted average common shares outstanding — diluted	111,847		111,377
Earnings per weighted-average common share outstanding
Net income attributable to common shareholders — basic	$	0.04	$	0.15
Net income attributable to common shareholders — diluted	$	0.04	$	0.14