v3.26.1
Borrowings - Securities Financing Transactions (Details) - USD ($)
$ in Thousands
Apr. 15, 2026
Apr. 02, 2026
2026-B ABS transaction    
Line of Credit Facility [Line Items]    
Additional Loans the Bank Transferred to the Trust   $ 72,413
Gain on Sale for Additional Loans Transferred by Bank   6,031
2026-B ABS transaction | Private Education Loans    
Line of Credit Facility [Line Items]    
Loans Transferred to the Trust by Third-Party Seller   $ 1,364,421
2026-C ABS transaction    
Line of Credit Facility [Line Items]    
Additional Loans the Bank Transferred to the Trust $ 108,313  
Gain on Sale for Additional Loans Transferred by Bank 5,227  
2026-C ABS transaction | Private Education Loans    
Line of Credit Facility [Line Items]    
Loans Transferred to the Trust by Third-Party Seller $ 2,037,435