Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2015

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, 2015 and 2014 (in thousands, except per share amounts):

	Three Months Ended   March 31,
	2015		2014
Net income attributable to common shareholders	$	16,122	$	15,766
Weighted average common shares outstanding — basic	110,916		110,257
Net effect of dilutive securities:
Contingently issuable performance shares and restricted stock units	461		631
Weighted average common shares outstanding — diluted	111,377		110,888
Earnings per average common share attributable to common shareholders — basic	$	0.15	$	0.14
Earnings per average common share attributable to common shareholders — diluted	$	0.14	$	0.14