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LOANS - Impaired Loans (Details)	Dec. 31, 2020 USD ($) borrower property	Dec. 31, 2019 USD ($)
LOANS
Unpaid Principal Balance - with no allowance	$ 13,211,000	$ 2,139,000
Recorded Investment - with no allowance	9,736,000	2,111,000
Related Allowance - with no allowance	0	0
Unpaid Principal Balance - with allowance	8,082,000	3,375,000
Recorded investment - with allowance	8,082,000	3,375,000
Related Allowance - with allowance	925,000	1,051,000
Unpaid Principal Balance	21,293,000	5,514,000
Recorded Investment	17,818,000	5,486,000
Real estate loan
LOANS
Related Allowance - with allowance	416,000	678,000
Commercial and industrial
LOANS
Related Allowance - with no allowance	0	0
Loans secured by farm land
LOANS
Related Allowance - with no allowance	0	0
Multi-family (5 or more) residential
LOANS
Related Allowance - with no allowance	0	0
Agricultural loans
LOANS
Related Allowance - with no allowance	$ 0	0
Residential mortgage
LOANS
Number borrowers collateralized by one property with specific allowance | borrower	2
Number of properties collateralized each loan | property	1
Residential mortgage | first liens
LOANS
Related Allowance - with no allowance	$ 0	0
Residential mortgage | junior liens
LOANS
Related Allowance - with no allowance	0	0
Residential mortgage | Real estate loan
LOANS
Related Allowance - with allowance	153,000	176,000
Residential mortgage | Real estate loan | first liens
LOANS
Unpaid Principal Balance - with no allowance	1,248,000	645,000
Recorded Investment - with no allowance	1,248,000	617,000
Unpaid Principal Balance - with allowance	1,200,000	406,000
Recorded investment - with allowance	1,200,000	406,000
Related Allowance - with allowance	9,000	0
Residential mortgage | Real estate loan | junior liens
LOANS
Unpaid Principal Balance - with no allowance	160,000	42,000
Recorded Investment - with no allowance	105,000	42,000
Unpaid Principal Balance - with allowance	309,000	326,000
Recorded investment - with allowance	309,000	326,000
Related Allowance - with allowance	153,000	176,000
Commercial
LOANS
Related Allowance - with no allowance	0	0
Commercial | Real estate loan
LOANS
Unpaid Principal Balance - with no allowance	7,168,000	684,000
Recorded Investment - with no allowance	5,398,000	684,000
Unpaid Principal Balance - with allowance	6,501,000	0
Recorded investment - with allowance	6,501,000	0
Related Allowance - with allowance	691,000	0
Commercial | Commercial and industrial
LOANS
Unpaid Principal Balance - with no allowance	1,781,000	563,000
Recorded Investment - with no allowance	1,287,000	563,000
Unpaid Principal Balance - with allowance	72,000	904,000
Recorded investment - with allowance	72,000	904,000
Related Allowance - with allowance	72,000	149,000
Commercial | Loans secured by farm land
LOANS
Unpaid Principal Balance - with no allowance	84,000	129,000
Recorded Investment - with no allowance	84,000	129,000
Unpaid Principal Balance - with allowance	0	478,000
Recorded investment - with allowance	0	478,000
Related Allowance - with allowance	0	48,000
Commercial | Multi-family (5 or more) residential
LOANS
Unpaid Principal Balance - with no allowance	2,770,000	0
Recorded Investment - with no allowance	1,614,000	0
Commercial | Agricultural loans
LOANS
Unpaid Principal Balance - with no allowance	0	76,000
Recorded Investment - with no allowance	0	76,000
Commercial | Construction Loans
LOANS
Unpaid Principal Balance - with allowance	0	1,261,000
Recorded investment - with allowance	0	1,261,000
Related Allowance - with allowance	$ 0	$ 678,000

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