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INVENTORIES (Notes)
 3 Months Ended
Mar. 31, 2022
Inventory Disclosure [Abstract]  
INVENTORIES INVENTORIES
Inventories consisted of the following (in thousands):
 March 31, 2022December 31, 2021
Raw materials$7,229 $8,519 
Work in process304 304 
Finished goods10,284 11,099 
Total$17,817 $19,922 
As of March 31, 2022 and December 31, 2021, finished goods inventory included $1.3 million and $1.9 million, respectively, associated with products shipped to customers and deferred labor costs for arrangements where revenue recognition had not yet commenced.