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Commitments and Contingencies - Additional Information (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended
Aug. 31, 2020
May 31, 2020
Sep. 30, 2020
Sep. 30, 2019
Commitment And Contingencies [Line Items]        
Strategic partnership agreement period     10 years  
Online bill payment products expiration month and year     2027-06  
Service agreement with existing financial institution partner expanded period   5 years    
Agreed amount of payment to partner under service agreement   $ 12.0    
Data Hosting and Other Services        
Commitment And Contingencies [Line Items]        
Purchase commitment, period 3 years      
Purchase commitment beginning date Sep. 01, 2020      
Sales and Marketing Expenses        
Commitment And Contingencies [Line Items]        
Strategic partnership agreement expenses     $ 0.5 $ 0.5