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INVENTORIES (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Inventory Disclosure [Abstract]    
Raw materials $ 3,505 $ 2,243
Work in process 1,284 1,109
Finished goods 1,554 1,087
Gross inventories 6,343 4,439
Less: provision for obsolescence (303) (388)
Inventories, net $ 6,040 $ 4,051