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DEPOSITS - Narrative (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Time certificates of deposits at or above FDIC insurance limit | $ 648,100 | $ 407,700
Public funds included in deposits | 1,300,000 | 1,200,000
Trust deposits | $ 901 | $ 884
Marketable Securities | Asset Pledged as Collateral |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Public funds included in deposits, pledged collateral, percentage | 110.00% |
Marketable Securities | Asset Pledged as Collateral | Deposits |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Public funds included in deposits, pledged collateral, amount | $ 1,500,000 |

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