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Balance Sheet Components - Accounts Receivable, Net (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]      
Allowance for doubtful accounts $ 2.1   $ 1.7
Provision for bad debt expense 1.4 $ 2.2  
Write-off of uncollectible accounts receivable $ 1.0 $ 0.5