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INVENTORIES (Tables)
 6 Months Ended
Jun. 30, 2017
Inventory Disclosure [Abstract]  
Schedule of net inventories
Net inventories consist of the following (in thousands):
 
June 30,
2017
 
December 31,
2016
Raw materials and purchased components
$
32,867

 
$
33,822

Work-in-process
37,624

 
31,799

Finished products
47,987

 
41,397

Inventories, net
$
118,478

 
$
107,018