Fair value measurements - Mortgage Servicing Rights at Fair Value (Detail) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
|
| Servicing Asset at Fair Value, Amount [Roll Forward] | ||
| Balance at December 31, 2025 — at amortized cost | $ 287,000 | |
| Changes in fair value included in Mortgage banking revenues (a) | $ (16,000) | |
| Additions | 8,000 | |
| Ending balance | 542,000 | |
| Changes in fair value | $ (17,000) |
| X | ||||||||||
- Definition Servicing Asset At Fair Value, Changes In Fair Value No definition available.
|
| X | ||||||||||
- Definition Amortized amount of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The value of new servicing assets, subsequently measured at fair value, acquired or created during the current period through purchases or from transfers of financial assets. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
|
| X | ||||||||||
- Definition Amount of increase (decrease) in fair value from changes in the inputs, assumptions, or model used to calculate the fair value of the contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|