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LOANS, ALLOWANCE FOR LOAN LOSSES AND IMPAIRED LOANS - Acquired Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding balance | $ 1,411,784 | $ 1,310,963
Carrying amount | 1,393,845 | 1,294,050
Receivables Acquired with Deteriorated Credit Quality |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding balance | 7,000 | 11,205
Carrying amount | 6,904 | 10,552
Non-PCI Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding balance | 136,192 | 187,346
Carrying amount | 134,522 | 184,399
Non-PCI Loans | Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding balance | 143,192 | 198,551
Carrying amount | $ 141,426 | $ 194,951

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