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INVENTORIES (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Raw materials $ 2,392 $ 2,309
Work in process 1,986 2,628
Finished goods   46
Provision for excess and obsolete inventory (1,060) (429)
Total inventories $ 3,318 $ 4,554