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INVENTORIES (Tables)
12 Months Ended
Dec. 31, 2018
Inventory Disclosure [Abstract]  
Schedule of components of inventories
The components of inventories, net are as follows (in thousands):
 
December 31,
 
2018
 
2017
Raw materials
$
19,193

 
$
16,500

Work-in-process
9,711

 
8,371

Finished goods
19,665

 
16,540

  Total
$
48,569

 
$
41,411