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Balance Sheet Components - Prepaid Expenses and Other Current Assets (Details) - USD ($)
$ in Thousands
Apr. 30, 2021
Jan. 31, 2021
Balance Sheet Components [Abstract]    
Prepaid expenses $ 73,992 $ 60,702
Restricted cash from international employee stock sales 40,548 50,475
Other receivables 19,265 4,107
Other 2,521 1,535
Prepaid expenses and other current assets $ 136,326 $ 116,819