LOANS AND ALLOWANCE FOR CREDIT LOSSES - Average Balance of Impaired Loans and Income Recognized on Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2022
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Average Investment in Impaired Loans	$ 10,977	$ 11,749
Interest Income Recognized on Impaired Loans on a Cash Basis	153	1,875
Commercial
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Average Investment in Impaired Loans	10,266	11,095
Interest Income Recognized on Impaired Loans on a Cash Basis	147	1,849
Commercial | Real estate loan
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Average Investment in Impaired Loans	9,710	9,804
Interest Income Recognized on Impaired Loans on a Cash Basis	143	483
Commercial | Commercial and industrial
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Average Investment in Impaired Loans	371	839
Interest Income Recognized on Impaired Loans on a Cash Basis	4	207
Commercial | Commercial Construction And Land
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Average Investment in Impaired Loans	47	47
Interest Income Recognized on Impaired Loans on a Cash Basis	0	1
Commercial | Loans secured by farm land
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Average Investment in Impaired Loans	79	81
Interest Income Recognized on Impaired Loans on a Cash Basis	0	0
Commercial | Multi-family (5 or more) residential.
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Average Investment in Impaired Loans	0	263
Interest Income Recognized on Impaired Loans on a Cash Basis	0	1,156
Commercial | Agricultural loans
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Average Investment in Impaired Loans	59	61
Interest Income Recognized on Impaired Loans on a Cash Basis	0	2
Residential mortgage
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Average Investment in Impaired Loans	711	654
Interest Income Recognized on Impaired Loans on a Cash Basis	6	26
Residential mortgage | Real estate loan | first liens
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Average Investment in Impaired Loans	612	587
Interest Income Recognized on Impaired Loans on a Cash Basis	5	17
Residential mortgage | Real estate loan | junior liens
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Average Investment in Impaired Loans	31	33
Interest Income Recognized on Impaired Loans on a Cash Basis	0	6
Residential mortgage | Home Equity Line of Credit [Member]
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Average Investment in Impaired Loans	68	34
Interest Income Recognized on Impaired Loans on a Cash Basis	$ 1	$ 3