Calculation of Earnings per Share (Tables)

9 Months Ended

Sep. 30, 2015

Earnings Per Share [Abstract]

Calculation of Basic and Diluted Earnings per Share

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,
	2015		2014		2015		2014
Net income attributable to VCA Inc.	$	54,854	$	27,452	$	147,454	$	107,079
Weighted-average common shares outstanding:
Basic	80,815		86,274		81,700		87,543
Effect of dilutive potential common shares:
Stock options	338		324		338		285
Non-vested shares and units	642		762		706		837
Diluted	81,795		87,360		82,744		88,665
Basic earnings per common share	$	0.68	$	0.32	$	1.80	$	1.22
Diluted earnings per common share	$	0.67	$	0.31	$	1.78	$	1.21