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Inventories
 9 Months Ended
Sep. 26, 2015
Inventory Disclosure [Abstract]  
Inventories
INVENTORIES

Inventories are summarized as follows:
 
September 26,
2015
 
December 27,
2014
Raw materials
$
40,983

 
$
40,649

Work-in-process
23,346

 
19,976

Finished goods
61,488

 
57,913

Supplies and other
236

 
126

LIFO reserve
(11,197
)
 
(14,457
)
Inventories
$
114,856

 
$
104,207