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Inventories
6 Months Ended
Jun. 27, 2015
Inventory Disclosure [Abstract]  
Inventories
Inventories
 
Inventories by major category are as follows (in thousands):
 
 
 
June 27,
2015
 
December 27,
2014
Raw materials
 
$
47,368

 
$
45,341

Work in process
 
18,562

 
19,649

Finished goods
 
76,727

 
72,020

 
 
$
142,657

 
$
137,010