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LOANS, ALLOWANCE FOR CREDIT LOSSES AND IMPAIRED LOANS - Acquired Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding balance | $ 1,460,792 | $ 1,411,784
Carrying amount | $ 1,437,884 | 1,393,845
Receivables Acquired with Deteriorated Credit Quality |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding balance |  | 7,000
Carrying amount |  | 6,904
Non-PCI Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding balance |  | 136,192
Carrying amount |  | 134,522
Non-PCI Loans | Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding balance |  | 143,192
Carrying amount |  | $ 141,426

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