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Inventory (Tables)
9 Months Ended
Oct. 01, 2021
Inventory Disclosure [Abstract]  
Schedule of Inventory
Inventory consisted of the following (in thousands):
 
September 30, 2021December 31, 2020
Raw materials$10,317 $7,773 
Work in process28,016 20,610 
Finished goods11,707 7,291 
Total$50,040 $35,674 
Balance Sheet classification:
Current portion included in inventory$28,240 $20,973 
Long-term portion included in other long-term assets21,800 14,701 
Total$50,040 $35,674