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Other Financial Statement Information - Schedule of Inventory (Detail) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Purchased materials $ 8,175 $ 6,436
Work in progress 6,403 3,996
Finished goods 7,180 4,838
Inventory $ 21,758 $ 15,270