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Inventories, Net - Schedule of Inventories, Net (Detail) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Inventory Disclosure [Abstract]    
Raw materials $ 3,650 $ 3,220
Work in process 11,504 11,668
Finished products 2,999 3,449
Total $ 18,153 $ 18,337