v3.26.1
Summary of Significant Accounting Policies (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Error Corrections and Prior Period Adjustments Restatement [Line Items]      
Servicing Liability, Fair Value, Change in Fair Value, Valuation Input, Statement of Income or Comprehensive Income [Extensible Enumeration] Servicing income    
Period of suspended accrued interest past due 120 days    
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Other Assets Other Assets  
Advertising costs $ 40.8 $ 30.8 $ 19.2
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Accrued expenses and other liabilities    
Restricted stock units      
Error Corrections and Prior Period Adjustments Restatement [Line Items]      
Service period 3 years    
Minimum      
Error Corrections and Prior Period Adjustments Restatement [Line Items]      
Sales period for loans held for sale 1 day    
Minimum | Restricted stock units      
Error Corrections and Prior Period Adjustments Restatement [Line Items]      
Service period 1 year    
Minimum | Property, Plant and Equipment      
Error Corrections and Prior Period Adjustments Restatement [Line Items]      
Estimated useful life 3 years    
Minimum | Internally developed software      
Error Corrections and Prior Period Adjustments Restatement [Line Items]      
Estimated useful life 3 years    
Maximum      
Error Corrections and Prior Period Adjustments Restatement [Line Items]      
Sales period for loans held for sale 3 days    
Maximum | Restricted stock units      
Error Corrections and Prior Period Adjustments Restatement [Line Items]      
Service period 4 years    
Maximum | Property, Plant and Equipment      
Error Corrections and Prior Period Adjustments Restatement [Line Items]      
Estimated useful life 7 years    
Maximum | Internally developed software      
Error Corrections and Prior Period Adjustments Restatement [Line Items]      
Estimated useful life 5 years    
Senior Notes and Residual Trust Certificates      
Error Corrections and Prior Period Adjustments Restatement [Line Items]      
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Liability, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent