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Inventories
 6 Months Ended
Jun. 30, 2017
Inventory Disclosure [Abstract]  
Inventories
Inventories
The following table sets forth the components of inventory:
(In thousands)
 
June 30, 2017
 
December 31, 2016
Finished products
 
$
63,034

 
$
54,348

Work in process
 
9,634

 
6,542

Raw materials and supplies
 
99,838

 
84,069

Inventories at current cost
 
172,506

 
144,959

Less: LIFO valuation
 
(41,893
)
 
(41,893
)
Total inventories
 
$
130,613

 
$
103,066