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INVENTORIES (Notes)
 9 Months Ended
Sep. 30, 2021
Inventory Disclosure [Abstract]  
INVENTORIES INVENTORIES
Inventories consisted of the following (in thousands):
 September 30, 2021December 31, 2020
Raw materials$6,710 $8,223 
Work in process304 353 
Finished goods15,201 17,992 
Total$22,215 $26,568 
As of September 30, 2021 and December 31, 2020, finished goods inventory included $1.6 million and $1.2 million, respectively, associated with products shipped to customers and deferred labor costs for arrangements where revenue recognition had not yet commenced.