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INVENTORIES
3 Months Ended
Mar. 31, 2018
Inventory Disclosure [Abstract]  
INVENTORIES
INVENTORIES
 
Net inventories are stated at the lower of cost (computed in accordance with the first-in, first-out method) or net realizable value. Elements of the cost include materials, labor, and overhead.
 
Net inventories consist of the following (in thousands):
 
March 31,
2018
 
December 31,
2017
Raw materials and purchased components
$
27,578

 
$
28,557

Work-in-process
39,382

 
33,355

Finished products
42,485

 
42,590

Inventories, net
$
109,445

 
$
104,502