Subsequent Event (Details) - USD ($) $ in Thousands |
1 Months Ended | 3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|---|
Oct. 21, 2026 |
Oct. 31, 2026 |
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Private Education Loans | ||||||
| Subsequent Event [Line Items] | ||||||
| Financing receivable, sale, principal | $ 300 | $ 1,769 | $ 3,830 | $ 3,609 | ||
| Financing receivable, sale, capitalized interest | $ 18 | $ 167 | $ 240 | $ 330 | ||
| Subsequent Event | ||||||
| Subsequent Event [Line Items] | ||||||
| Reduction in workforce, percent | 5.00% | |||||
| Subsequent Event | Private Education Loans | ||||||
| Subsequent Event [Line Items] | ||||||
| Financing receivable, sale, principal | $ 113,000 | |||||
| Financing receivable, sale, capitalized interest | 3,000 | |||||
| Financing receivable, sale, accrued interest | $ 100 | |||||
| Subsequent Event | Minimum | ||||||
| Subsequent Event [Line Items] | ||||||
| Estimated total restructuring costs | $ 16,000 | |||||
| Subsequent Event | Maximum | ||||||
| Subsequent Event [Line Items] | ||||||
| Estimated total restructuring costs | $ 18,000 | |||||