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Inventories (Tables)
12 Months Ended
Dec. 31, 2016
Inventory Disclosure [Abstract]  
Components of Inventory
Inventories consist of the following (in thousands):
 
December 31,
2016
 
January 2,
2016
Raw materials
$
32,647

 
$
25,781

Work-in-process
7,701

 
4,337

Finished goods
32,194

 
31,920

     Total
$
72,542

 
$
62,038