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Stock-Based Compensation (Tables)
 6 Months Ended
Jul. 03, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Share-based compensation expense The following table shows total stock-based compensation expense (in thousands):
 
Fiscal Quarter Ended
 
Two Fiscal Quarters Ended
 
July 3,
2018
 
July 4,
2017
 
July 3,
2018
 
July 4,
2017
Stock-based compensation expense
$
1,012

 
$
648

 
$
1,592

 
$
945

Capitalized stock-based compensation expense
$
13

 
$
52

 
$
25

 
$
102