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INVENTORIES (Details) - USD ($)
$ in Thousands
Jun. 30, 2018
Dec. 31, 2017
Inventory Disclosure [Abstract]    
Raw materials $ 10,551 $ 9,229
Work in process 3,709 3,295
Finished goods 13,341 10,919
Provision for excess and obsolete inventory (428) (251)
Total inventories $ 27,173 $ 23,192