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Financial Statement Components - Components of Accounts Receivable, Net (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Accounts receivable $ 133,363 $ 114,745
Unbilled accounts receivable 25,433 17,603
Allowance for doubtful accounts (5,213) (2,358)
Accounts receivable, net $ 153,583 $ 129,990