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Balance Sheet Details - Inventories (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Balance Sheet Related Disclosures [Abstract]    
Raw materials $ 8,768 $ 6,133
Work-in-process 920 659
Finished goods 9,872 7,092
Total inventories $ 19,560 $ 13,884