Calculation of Earnings per Share (Tables)

6 Months Ended

Jun. 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 June 30,				Six Months Ended June 30,
	2016		2015		2016		2015
Net income attributable to VCA Inc.	$	64,050	$	54,299	$	110,277	$	92,600
Weighted-average common shares outstanding:
Basic	80,835		81,956		80,806		82,150
Effect of dilutive potential common shares:
Stock options	295		334		294		337
Non-vested shares and units	599		794		530		740
Diluted	81,729		83,084		81,630		83,227
Basic earnings per common share	$	0.79	$	0.66	$	1.36	$	1.13
Diluted earnings per common share	$	0.78	$	0.65	$	1.35	$	1.11