Calculation of Earnings per Share (Tables)

9 Months Ended

Sep. 30, 2016

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,
	2016		2015		2016		2015
Net income attributable to VCA Inc.	$	58,231	$	54,854	$	168,508	$	147,454
Weighted-average common shares outstanding:
Basic	80,924		80,815		80,845		81,700
Effect of dilutive potential common shares:
Stock options	270		338		287		338
Non-vested shares and units	618		642		563		706
Diluted	81,812		81,795		81,695		82,744
Basic earnings per common share	$	0.72	$	0.68	$	2.08	$	1.80
Diluted earnings per common share	$	0.71	$	0.67	$	2.06	$	1.78