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INVENTORIES (Tables)
3 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]  
Schedule of Carrying Values of Inventories
The carrying values of inventories are as follows (in thousands):
March 31, 2021December 31, 2020
Finished goods$103,560 $105,527 
Work in process24,699 17,021 
Obsolescence reserve(24,852)(25,477)
Inventories$103,407 $97,071