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Balance Sheet Components - Schedule of Cash and Cash Equivalents (Detail) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Cash And Cash Equivalents [Abstract]    
Cash $ 111,422 $ 88,046
Commercial paper 1,000 0
Money market funds 58,801 590,347
Total cash and cash equivalents $ 171,223 $ 678,393