Calculation of Earnings per Share

9 Months Ended

Sep. 30, 2014

Earnings Per Share [Abstract]

Calculation of Earnings per Share

Calculation of Earnings per Share

Basic earnings per share is calculated by dividing net income by the weighted-average number of shares outstanding during the period. Diluted earnings per share is calculated by dividing net income attributable to VCA Inc. by the weighted-average number of common shares outstanding, after giving effect to all dilutive potential common shares outstanding during the period. Basic and diluted earnings per share were calculated as follows (in thousands, except per share amounts):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2014		2013		2014		2013
Net income attributable to VCA Inc.	$	27,452	$	40,647	$	107,079	$	112,794
Weighted-average common shares outstanding:
Basic	86,274		88,834		87,543		88,583
Effect of dilutive potential common shares:
Stock options	324		310		285		318
Nonvested shares and units	762		701		837		758
Diluted	87,360		89,845		88,665		89,659
Basic earnings per share	$	0.32	$	0.46	$	1.22	$	1.27
Diluted earnings per share	$	0.31	$	0.45	$	1.21	$	1.26

For the three months ended September 30, 2014 and September 30, 2013, there were no potential common shares excluded from the computation of diluted earnings per share.

There were no potential common shares excluded from the computation of diluted earnings per share for the nine months ended September 30, 2014. For the nine months ended September 30, 2013, potential common shares of 23,538 were excluded from the computation of diluted earnings per share because their inclusion would have had an antidilutive effect.