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Net Income Per Share (Tables)
3 Months Ended
Mar. 31, 2018
Earnings Per Share [Abstract]  
Net Income Per Share
Net income per share is calculated as follows (in thousands, except per share amounts):
 
Fiscal three months ended
 
Fiscal three months ended
 
March 31, 2018
 
April 1, 2017
 
Income
 
Shares
 
Per Share
Amount
 
Income
 
Shares
 
Per Share
 Amount
Basic net income per share:
$
71,433

 
124,477

 
$
0.57

 
$
60,311

 
130,276

 
$
0.46

Dilutive effect of share-based awards

 
697

 

 

 
814

 

Diluted net income per share:
$
71,433

 
125,174

 
$
0.57

 
$
60,311

 
131,090

 
$
0.46