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Inventories (Tables)
9 Months Ended
Sep. 30, 2015
Inventories [Abstract]  
Inventories on a FIFO basis
Inventories at September 30, 2015 and December 31, 2014, on a first-in, first-out ("FIFO") basis, were as follows:

(In thousands)
September 30, 2015
 
December 31, 2014
Raw materials
$
7,137
 
$
8,244
Work in process
 
9,242
 
 
14,073
Finished manufactured goods
 
20,316
 
 
20,748
Total inventories
$
36,695
 
$
43,065