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INVENTORIES
3 Months Ended
Mar. 31, 2022
Inventory Disclosure [Abstract]  
INVENTORIES INVENTORIES
The major classes of inventories were as follows:
March 31, 2022December 31, 2021
Raw materials$28,550 $27,474 
Work in process1,359 582 
Finished goods703 363 
Inventory reserve(3,414)(2,613)
$27,198 $25,806 
The Company reviews inventory for slow-moving or obsolete amounts based on expected product sales volume and provides reserves against the carrying amount of inventory as appropriate.