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NET INCOME PER SHARE
9 Months Ended
Sep. 26, 2014
Earnings Per Share [Abstract]  
NET INCOME PER SHARE
NET INCOME PER SHARE
Diluted common shares were calculated as follows (in thousands, except per share amounts):
 
Thirteen weeks ended
 
Thirty-nine weeks ended
 
September 26, 2014

September 27, 2013
 
September 26, 2014
 
September 27, 2013
Net income
$
20,910

 
$
18,952

 
$
38,650

 
$
30,412

 
 
 
 
 
 
 
 
Weighted average number of common shares used in basic net income per common share
40,793

 
40,330

 
40,701

 
40,085

Dilutive effect of outstanding stock options and non-vested restricted stock
245

 
340

 
270

 
310

Weighted average number of common shares used in diluted net income per common share
41,038

 
40,670

 
40,971

 
40,395

   Net income per common share:
 
 
 
 
 
 
 
Basic
$
0.51

 
$
0.47

 
$
0.95

 
$
0.76

Diluted
$
0.51

 
$
0.47

 
$
0.94

 
$
0.75

 
 
 
 
 
 
 
 
Anti-dilutive shares
97

 

 
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 options, non-vested restricted stock, and performance share units, except where their inclusion would be anti-dilutive.
Anti-dilutive shares include unvested restricted stock, performance share units, and in-the-money 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.