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Inventory (Detail) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Inventory Disclosure [Abstract]    
Raw materials  $ 3,127 $ 3,389
Work-in-process 6,828 9,949
Finished goods 11,657 6,359
Obsolescence reserve (2,953) (2,254)
Total inventories $ 18,659 $ 17,443