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Inventories
6 Months Ended
Jun. 30, 2017
Inventory, Net [Abstract]  
Inventories
The components of inventories are as follows:
 
 
June 30,
 
December 31,
(In Thousands)
2017
 
2016
Finished goods
$
22,602

 
$
16,215

Work-in-process
10,598

 
8,590

Raw materials
32,888

 
23,733

Stores, supplies and other
18,271

 
17,531

Total
$
84,359

 
$
66,069