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Inventories (Tables)
 12 Months Ended
Dec. 31, 2016
Inventory Disclosure [Abstract]  
Summary of Inventories
Inventories at December 31 are as follows:
(In thousands)
2016

2015
Finished Goods
$
28,792

 
$
27,770

Work in Progress
20,790

 
23,977

Raw Material
67,015

 
63,720

 
$
116,597

 
$
115,467