GOODWILL AND OTHER INTANGIBLE ASSETS - Summary of Components of Other Identifiable Intangible Assets (Details) - USD ($) $ in Thousands |
Sep. 30, 2026 |
Dec. 31, 2025 |
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| Intangible Asset, Finite-Lived [Line Items] | ||
| Gross Amount | $ 59,761 | $ 59,761 |
| Accumulated Amortization | 28,304 | 21,771 |
| Core deposit intangible | ||
| Intangible Asset, Finite-Lived [Line Items] | ||
| Gross Amount | 48,530 | 48,530 |
| Accumulated Amortization | 23,918 | 18,706 |
| Customer relationship intangibles | ||
| Intangible Asset, Finite-Lived [Line Items] | ||
| Gross Amount | 11,231 | 11,231 |
| Accumulated Amortization | $ 4,386 | $ 3,065 |
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- Definition Amount of accumulated amortization of finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, before accumulated amortization, of finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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