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Inventories
6 Months Ended
Jun. 30, 2019
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consisted of the following (in thousands):
 
June 30, 2019
 
December 31, 2018
Raw materials
$
32,545

 
$
42,738

Work-in-process
4,112

 
3,435

Finished goods
36,232

 
37,109

 
$
72,889

 
$
83,282