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Inventory (Tables)
12 Months Ended
Dec. 31, 2020
Inventory Disclosure [Abstract]  
Schedule of inventory
Inventory consisted of the following:
December 31,
(in thousands)20202019
Raw materials$16,000 $11,417 
Work in process11,212 9,450 
Finished goods8,532 8,313 
Total inventory$35,744 $29,180