Liability for Losses under Representations and Warranties - Summary of Company's Liability for Losses under Representations and Warranties (Detail) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Mortgage Banking [Abstract] | ||
| Balance, beginning of quarter | $ 5,284 | $ 6,886 |
| Provision for losses: | ||
| Pursuant to loan sales | 310 | 304 |
| Reduction in liability due to change in estimate | (442) | (1,168) |
| Losses incurred | (0) | (67) |
| Balance, end of quarter | 5,152 | 5,955 |
| UPB of loans subject to representations and warranties at end of quarter | $ 211,156,467 | $ 220,977,898 |