LOANS - Average Balance of Impaired Loans and Income Recognized on Impaired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
LOANS
Average Investment in Impaired Loans	$ 12,895	$ 18,043	$ 11,246
Interest Income Recognized on Impaired Loans on a Cash Basis	2,065	821	480
Commercial
LOANS
Average Investment in Impaired Loans	12,244	16,035	8,944
Interest Income Recognized on Impaired Loans on a Cash Basis	2,030	732	339
Commercial | Real estate loan
LOANS
Average Investment in Impaired Loans	9,757	11,617	5,266
Interest Income Recognized on Impaired Loans on a Cash Basis	657	557	258
Commercial | Commercial and industrial
LOANS
Average Investment in Impaired Loans	2,078	2,636	2,542
Interest Income Recognized on Impaired Loans on a Cash Basis	210	34	34
Commercial | Commercial Construction And Land
LOANS
Average Investment in Impaired Loans	72	48	521
Interest Income Recognized on Impaired Loans on a Cash Basis	3	3	15
Commercial | Loans secured by farm land
LOANS
Average Investment in Impaired Loans	80	84	319
Interest Income Recognized on Impaired Loans on a Cash Basis	0	1	27
Commercial | Multi-family (5 or more) residential.
LOANS
Average Investment in Impaired Loans	197	1,583	202
Interest Income Recognized on Impaired Loans on a Cash Basis	1,156	133	0
Commercial | Agricultural loans
LOANS
Average Investment in Impaired Loans	60	67	76
Interest Income Recognized on Impaired Loans on a Cash Basis	4	4	4
Commercial | Other commercial loans
LOANS
Average Investment in Impaired Loans	0	0	18
Interest Income Recognized on Impaired Loans on a Cash Basis	0	0	1
Residential mortgage
LOANS
Average Investment in Impaired Loans	651	2,008	2,302
Interest Income Recognized on Impaired Loans on a Cash Basis	35	89	141
Residential mortgage | Real estate loan | first liens
LOANS
Average Investment in Impaired Loans	575	1,647	1,853
Interest Income Recognized on Impaired Loans on a Cash Basis	24	78	116
Residential mortgage | Real estate loan | junior liens
LOANS
Average Investment in Impaired Loans	33	361	392
Interest Income Recognized on Impaired Loans on a Cash Basis	7	11	22
Residential mortgage | Home Equity Line of Credit [Member]
LOANS
Average Investment in Impaired Loans	43	0	57
Interest Income Recognized on Impaired Loans on a Cash Basis	$ 4	$ 0	$ 3