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LOANS - Nonaccrual Loans and Loans Past Due Ninety Days or More and Still Accruing (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
LOANS
Past Due 90+ Days and Accruing	$ 1,924	$ 1,975
Nonaccrual	21,341	21,416
Commercial
LOANS
Past Due 90+ Days and Accruing	947	796
Nonaccrual	16,147	14,267
Commercial | Real estate loan
LOANS
Past Due 90+ Days and Accruing	752	395
Nonaccrual	11,205	11,550
Commercial | Commercial and industrial
LOANS
Past Due 90+ Days and Accruing	99	142
Nonaccrual	3,232	970
Commercial | Construction Loans
LOANS
Past Due 90+ Days and Accruing	0	0
Nonaccrual	48	49
Commercial | Loans secured by farm land
LOANS
Past Due 90+ Days and Accruing	30	188
Nonaccrual	84	84
Commercial | Multi-family (5 or more) residential
LOANS
Past Due 90+ Days and Accruing	0	0
Nonaccrual	1,578	1,614
Commercial | Agricultural loans
LOANS
Past Due 90+ Days and Accruing	66	0
Nonaccrual	0	0
Commercial | Other commercial loans
LOANS
Past Due 90+ Days and Accruing	0	71
Nonaccrual	0	0
Residential mortgage
LOANS
Past Due 90+ Days and Accruing	967	1,123
Nonaccrual	5,163	7,064
Residential mortgage | Real estate loan | first liens
LOANS
Past Due 90+ Days and Accruing	832	838
Nonaccrual	4,569	6,387
Residential mortgage | Real estate loan | junior liens
LOANS
Past Due 90+ Days and Accruing	71	52
Nonaccrual	305	378
Residential mortgage | Home equity lines of credit
LOANS
Past Due 90+ Days and Accruing	64	233
Nonaccrual	289	299
Consumer
LOANS
Past Due 90+ Days and Accruing	10	56
Nonaccrual	$ 31	$ 85

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