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Inventories
3 Months Ended
Mar. 31, 2015
Inventory Disclosure [Abstract]  
Inventories
Inventories
(In thousands)
 
March 31, 2015
 
December 31, 2014
Finished products
 
$
71,693

 
$
67,713

Work in process
 
5,255

 
8,942

Raw materials and supplies
 
60,733

 
46,299

Total inventories
 
137,681

 
122,954