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Inventories (Tables)
9 Months Ended
Sep. 30, 2021
Inventory Disclosure [Abstract]  
Schedule of Inventories
Inventories consisted of the following:
September 30,December 31,
20212020
(In thousands)
Raw materials$7,122 $1,948 
Work-in-progress8,098 5,361 
Total$15,220 $7,309