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GOODWILL, OTHER INTANGIBLE ASSETS AND MORTGAGE SERVICING RIGHTS (Estimated Annual Amortization Expense) (Details) - Core Deposit Intangibles [Member] - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022 | Dec. 31, 2021
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Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year | $ 857 |  |
Finite-Lived Intangible Asset, Expected Amortization, Year One | 2,626 |  |
Finite-Lived Intangible Asset, Expected Amortization, Year Two | 1,567 |  |
Finite-Lived Intangible Asset, Expected Amortization, Year Three | 904 |  |
Finite-Lived Intangible Asset, Expected Amortization, Year Four | 426 |  |
Thereafter | 162 |  |
Finite lived assets, net | $ 6,542 | $ 9,440 | $ 14,855

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