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Inventories (Tables)
 9 Months Ended
Oct. 01, 2016
Inventory Disclosure [Abstract]  
Inventories
Inventories by major category are as follows (in thousands):
 
 
 
October 1,
2016
 
January 2,
2016
Raw materials
 
$
32,717

 
$
40,938

Work in process
 
15,007

 
14,696

Finished goods
 
64,073

 
65,981

 
 
$
111,797

 
$
121,615