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