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Inventory (Tables)
3 Months Ended
Mar. 31, 2022
Inventory Disclosure [Abstract]  
Schedule of Components of Inventories
Inventories consisted of the following at March 31, 2022 and December 31, 2021 (in thousands):

March 31,December 31,
20222021
Raw materials$1,791 $1,343 
Work in process1,762 1,625 
Finished goods1,952 2,099 
$5,505 $5,067