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Inventory (Tables)
9 Months Ended
Sep. 30, 2020
Inventory Disclosure [Abstract]  
Components of Inventories
Inventories consisted of the following at September 30, 2020 and December 31, 2019 (in thousands):

September 30,December 31,
20202019
Raw materials$5,128 $4,854 
Work in process2,257 1,561 
Finished goods2,074 1,644 
$9,459 $8,059