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Composition of certain financial statement captions - Schedule of Accrued Liabilities (Detail) - USD ($)
$ in Thousands
Apr. 30, 2020
Jan. 31, 2020
Composition Of Certain Financial Statement [Abstract]    
Payroll-related expenses and taxes $ 7,529 $ 5,032
Payment processing fees liability 1,752 2,738
Other 2,093 1,473
Total $ 11,374 $ 9,243