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INVENTORIES (Tables)
9 Months Ended
Sep. 30, 2021
Inventory Disclosure [Abstract]  
Schedule of components of inventories
The components of inventories, net are as follows (in thousands):
September 30,December 31,
20212020
Raw materials$35,434 $26,886 
Work-in-process17,222 16,266 
Finished goods14,553 21,498 
     Total$67,209 $64,650