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DEPOSITS - Narrative (Details) - USD ($) $ in Thousands | Mar. 31, 2026 | Dec. 31, 2025
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Time certificates of deposits at or above FDIC insurance limit | $ 494,300 | $ 565,600
Public funds included in deposits | 1,200,000 | 1,300,000
Trust deposits | 888 | $ 683
Marketable Securities | Asset Pledged as Collateral | Deposits |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Public funds included in deposits, pledged collateral, amount | $ 1,600,000 |

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