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Balance Sheets Components - Schedule of Accounts Receivable, Net (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Accounts Receivable Net Current [Abstract]    
Accounts receivable, gross $ 25,320 $ 23,970
Allowance for credit losses (50) (50)
Accounts receivable, net $ 25,270 $ 23,920