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Inventory - Schedule of Inventory (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Inventory Disclosure [Abstract]    
Raw materials $ 4,620 $ 3,408
Work in process 4,617 4,054
Finished goods 10,544 5,711
Inventory, net $ 19,781 $ 13,173