v3.26.3
Borrowings - Secured Financing (Details) - USD ($)
$ in Thousands
9 Months Ended
Mar. 11, 2026
May 07, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
2025 Debt Transactions          
Securities Financing Transaction [Line Items]          
Debt encumbered     $ 495,007    
2025-A ABS Transaction          
Securities Financing Transaction [Line Items]          
Loans Transferred to the Trust   $ 576,908      
Notes Issued   539,000      
Gross Proceeds   $ 538,889      
Weighted Average Cost of Funds (as a percent)   1.49%      
Weighted Average Life of Notes (in years)   5 years 5 months 15 days      
SMB Private Education Loan Trust 2025          
Securities Financing Transaction [Line Items]          
Loans Transferred to the Trust         $ 576,908
Notes Issued         $ 539,000
Gross Proceeds       $ 538,889  
2026 Debt Transactions          
Securities Financing Transaction [Line Items]          
Debt encumbered     617,085    
2026-A ABS Transaction          
Securities Financing Transaction [Line Items]          
Loans Transferred to the Trust $ 649,813        
Notes Issued 618,000        
Gross Proceeds $ 617,781        
Weighted Average Cost of Funds (as a percent) 1.15%        
Weighted Average Life of Notes (in years) 5 years 7 months 20 days        
SMB Private Education Loan Trust 2026          
Securities Financing Transaction [Line Items]          
Loans Transferred to the Trust     649,813    
Notes Issued     618,000    
Gross Proceeds     $ 617,781