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
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