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Summary of Significant Accounting Policies - Schedule of Inventories (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Raw materials and work-in-progress $ 22,318 $ 31,676
Finished goods 3,743 5,174
Less: reserves (1,246) (1,186)
Inventories, net $ 24,815 $ 35,664