COMMITMENTS AND CONTINGENCIES - Schedule of Guarantor Obligations (Details) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Commitments and Contingencies Disclosure [Abstract] | ||
| Commitments to extend credit | $ 4,312,538 | $ 4,054,259 |
| Unused home equity lines of credit | 467,961 | 451,886 |
| Financial standby letters of credit | 62,446 | 69,796 |
| Mortgage interest rate lock commitments | $ 230,773 | $ 201,806 |