Quarterly report pursuant to Section 13 or 15(d)

Commitment and Contingencies - Additional Information (Details)

v3.21.2
Commitment and Contingencies - Additional Information (Details) - USD ($)
 3 Months Ended 6 Months Ended
Sep. 07, 2017
Jul. 31, 2021
Jul. 31, 2020
Jul. 31, 2021
Jul. 31, 2020
Jan. 31, 2021
Loss Contingencies [Line Items]            
Deferred rent   $ 2,000,000   $ 2,000,000   $ 2,200,000
Rent expense   1,600,000 $ 1,700,000 3,200,000 $ 3,600,000  
Letters of credit   800,000   800,000    
Accrued expenses and other current liabilities            
Loss Contingencies [Line Items]            
Deferred rent   1,300,000   1,300,000   1,300,000
Other liabilities            
Loss Contingencies [Line Items]            
Deferred rent   $ 700,000   $ 700,000   $ 900,000
Pending litigation            
Loss Contingencies [Line Items]            
Loss contingency, damages sought $ 50,000,000