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INVENTORIES (Tables)
6 Months Ended
Jun. 30, 2022
Inventory Disclosure [Abstract]  
Major classes of inventories
The major classes of inventories were as follows:
June 30, 2022December 31, 2021
Raw materials$29,577 $27,474 
Work in process1,474 582 
Finished goods1,223 363 
Inventory reserve(3,531)(2,613)
$28,743 $25,806