NET INCOME PER SHARE

9 Months Ended

Sep. 25, 2015

Diluted common shares were calculated as follows (in thousands, except per share amounts):



	Thirteen weeks ended				Thirty-nine weeks ended
	September 25, 2015		September 26, 2014		September 25, 2015		September 26, 2014
Net income	$	20,090	$	20,910	$	43,079	$	38,650

Weighted average number of common shares used in basic net income per common share	41,296		40,793		41,189		40,701
Dilutive effect of outstanding stock options and non-vested restricted stock	324		245		357		270
Weighted average number of common shares used in diluted net income per common share	41,620		41,038		41,546		40,971
Net income per common share:
Basic	$	0.49	$	0.51	$	1.05	$	0.95
Diluted	$	0.48	$	0.51	$	1.04	$	0.94

Anti-dilutive shares	91		97		227		35

Basic net income per share is calculated by dividing net income by the weighted average number of common shares outstanding during the period. Diluted net income per share is calculated by dividing net income by the weighted average number of common shares and potential common shares outstanding during the period. Potential common shares include the dilutive effects of outstanding stock options, vested and non-vested restricted stock, performance share units, and shares issued under the employee stock purchase plan, except where their inclusion would be anti-dilutive.

Anti-dilutive shares include non-vested restricted stock, performance share units, and outstanding stock options for which the sum of the assumed proceeds, including unrecognized compensation expense, exceeds the average stock price during the periods presented. Anti-dilutive shares associated with our stock options relate to those stock options with an exercise price higher than the average market value of our stock during the periods presented.