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Operating Leases - Additional Information (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Oct. 31, 2019
USD ($)
Oct. 31, 2018
USD ($)
Oct. 31, 2019
USD ($)
Oct. 31, 2018
USD ($)
Oct. 31, 2017
ft²
Lessee Lease Description [Line Items]          
Operating lease, description     The Company leases its headquarters located in Sunnyvale, California, as well as office and data center space in various locations under non-cancelable operating lease agreements, with expiration dates between fiscal years 2020 and 2024.    
Operating lease, expiration date beginning period     2020    
Operating lease, expiration date ending period     2024    
Sublease rental payments $ 4,960   $ 4,960    
Unrelated Third Party          
Lessee Lease Description [Line Items]          
Sublease rental payments $ 3,900   $ 3,900    
Office lease contractual term 26 months   26 months    
Sublease commencement date Dec. 01, 2019        
Fiserv Solutions, LLC          
Lessee Lease Description [Line Items]          
Lease rentable space of office building | ft²         33,400
Sublease cost $ 300 $ 300 $ 900 $ 900  
Sublease expiration date     2019-11