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Inventories
3 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories are comprised of the following amounts:
March 31, 2021December 31, 2020
Raw materials$23,605 $22,589 
Work in process22,626 20,758 
Finished goods21,300 19,170 
Total inventories$67,531 $62,517