Portfolio Loans Receivable and Allowance for Credit Losses - Schedule of Credit Losses for Financing Receivables (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Financing Receivable, Allowance for Credit Loss [Roll Forward] | ||||
| Balance at beginning of period | $ 54,431 | $ 47,447 | $ 54,660 | $ 48,652 |
| Provision for put-back reserve | 4,903 | 4,650 | 11,502 | 10,977 |
| Balance at end of period | 55,493 | 53,045 | 55,493 | 53,045 |
| Unfunded Commitments | ||||
| Financing Receivable, Allowance for Credit Loss [Roll Forward] | ||||
| Balance at beginning of period | 1,649 | 1,191 | 1,379 | 1,191 |
| Provision for put-back reserve | (54) | 217 | 216 | 217 |
| Balance at end of period | 1,595 | 1,408 | 1,595 | 1,408 |
| Mortgage Loan Put-Back Reserve | ||||
| Financing Receivable, Allowance for Credit Loss [Roll Forward] | ||||
| Balance at beginning of period | 1,465 | 2,294 | 2,339 | 2,260 |
| Reserve utilization | 0 | 0 | (916) | 0 |
| Provision for put-back reserve | 15 | 19 | 57 | 53 |
| Balance at end of period | $ 1,480 | $ 2,313 | $ 1,480 | $ 2,313 |