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LOANS AND LEASES - Additional Information (Details) | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2025 USD ($) loans | Sep. 30, 2024 USD ($) loans | Sep. 30, 2025 USD ($) loans | Sep. 30, 2024 USD ($) loans | Jun. 30, 2025 USD ($) | Dec. 31, 2024 USD ($) | Jun. 30, 2024 USD ($) | Dec. 31, 2023 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $ 600,000 | $ 100,000 | $ 1,800,000 | $ 500,000 |  |  |  |
Real Estate Acquired Through Foreclosure | 111,000 | 30,000 | 111,000 | 30,000 | $ 204,000 | $ 64,000 | $ 30,000 | $ 106,000
Unused Commitments to Extend Credit | $ 4,074,151,000 |  | $ 4,074,151,000 |  |  | $ 3,750,657,000 |  |
Nonaccrual loans |  | $ 200,000 |  | $ 800,000 |  |  |  |
Impaired receivables, Number of Contracts | loans | 6 | 1 | 19 | 6 |  |  |  |
Residential real estate |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Restructured Loans, Loan Relationships, Review Threshold Amount Minimum |  |  | $ 250,000 |  |  |  |  |
Financial Difficulty Modification |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Unused Commitments to Extend Credit | $ 0 | $ 0 | $ 0 | $ 0 |  |  |  |

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