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Inventory - Schedule of Inventory (Detail) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Raw materials $ 4,419 $ 4,620
Work in process 5,627 4,617
Finished goods 12,173 10,544
Inventory, net $ 22,219 $ 19,781