Calculation of Earnings per Share

6 Months Ended

Jun. 30, 2015

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):


7.	Calculation of Earnings per Share, continued



	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Net income attributable to VCA Inc.	$	54,299	$	45,584	$	92,600	$	79,627
Weighted-average common shares outstanding:
Basic	81,956		88,041		82,150		88,188
Effect of dilutive potential common shares:
Stock options	334		265		337		260
Non-vested shares and units	794		885		740		864
Diluted	83,084		89,191		83,227		89,312
Basic earnings per common share	$	0.66	$	0.52	$	1.13	$	0.90
Diluted earnings per common share	$	0.65	$	0.51	$	1.11	$	0.89

For the three months ended June 30, 2015 and 2014 there were no potential common shares excluded from the computation of diluted earnings per share.

For the six months ended June 30, 2015, an immaterial amount of potential common shares were excluded from the computation of diluted earnings per share because their inclusion would have had an antidilutive effect. For the six months ended June 30, 2014 there were no potential common shares excluded from the computation of diluted earnings per share.