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Inventories
 12 Months Ended
Dec. 31, 2015
Inventory Disclosure [Abstract]  
Inventories
Inventories
 
The components of inventories consisted of the following:
 

 
December 31,
 (in thousands) 
2015
 
2014
Raw materials
$
75,950

 
$
97,732

In-process products
18,828

 
19,496

Finished products
100,979

 
99,317

 
$
195,757

 
$
216,545