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Balance Sheet Accounts - Inventory (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Raw materials $ 6,188 $ 5,506
Work in process 1,256 1,200
Finished goods 20,956 21,954
Inventory, net $ 28,400 $ 28,660