LOANS - Nonaccrual Loans and Loans Past Due Ninety Days or More and Still Accruing (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
LOANS
Past Due 90+ Days and Accruing	$ 1,881	$ 1,975
Nonaccrual	22,971	21,416
Commercial
LOANS
Past Due 90+ Days and Accruing	1,101	796
Nonaccrual	17,292	14,267
Commercial | Real estate loan
LOANS
Past Due 90+ Days and Accruing	756	395
Nonaccrual	11,300	11,550
Commercial | Commercial and industrial
LOANS
Past Due 90+ Days and Accruing	91	142
Nonaccrual	4,282	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	188	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	759	1,123
Nonaccrual	5,602	7,064
Residential mortgage | Real estate loan | first liens
LOANS
Past Due 90+ Days and Accruing	600	838
Nonaccrual	4,941	6,387
Residential mortgage | Real estate loan | junior liens
LOANS
Past Due 90+ Days and Accruing	61	52
Nonaccrual	367	378
Residential mortgage | Home equity lines of credit
LOANS
Past Due 90+ Days and Accruing	98	233
Nonaccrual	294	299
Consumer
LOANS
Past Due 90+ Days and Accruing	21	56
Nonaccrual	$ 77	$ 85