v3.21.1
Summary of Significant Accounting Policies - Concentration of Credit Risk (Details) - Customers - Accounts receivable
3 Months Ended 12 Months Ended
Apr. 30, 2021
Jan. 31, 2021
Channel partner A    
Concentration Risk [Line Items]    
Concentration risk, percentage 9.00% 10.00%
Customer A    
Concentration Risk [Line Items]    
Concentration risk, percentage 0.00% 17.00%