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LOANS - Impaired Loans (Details) - USD ($)	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Unpaid Principal Balance - with no allowance	$ 2,118,000		$ 2,139,000
Recorded Investment - with no allowance	2,091,000		2,111,000
Related Allowance - with no allowance	0		0
Unpaid Principal Balance - with allowance	12,189,000		3,375,000
Recorded investment - with allowance	12,189,000		3,375,000
Related Allowance - with allowance	1,956,000		1,051,000
Unpaid Principal Balance	14,307,000		5,514,000
Recorded Investment	14,280,000		5,486,000
Residential mortgage | Real estate loan
Related Allowance - with allowance	154,000		176,000
Residential mortgage | Real estate loan | first liens
Unpaid Principal Balance - with no allowance	179,000		645,000
Recorded Investment - with no allowance	152,000		617,000
Related Allowance - with no allowance	0		0
Unpaid Principal Balance - with allowance	1,206,000		406,000
Recorded investment - with allowance	1,206,000		406,000
Related Allowance - with allowance	10,000		0
Residential mortgage | Real estate loan | junior liens
Unpaid Principal Balance - with no allowance	41,000		42,000
Recorded Investment - with no allowance	41,000		42,000
Related Allowance - with no allowance	0		0
Unpaid Principal Balance - with allowance	314,000		326,000
Recorded investment - with allowance	314,000		326,000
Related Allowance - with allowance	154,000		176,000
Commercial | Real estate loan
Unpaid Principal Balance - with no allowance	747,000		684,000
Recorded Investment - with no allowance	747,000		684,000
Related Allowance - with no allowance	0		0
Unpaid Principal Balance - with allowance	6,754,000		0
Recorded investment - with allowance	6,754,000		0
Related Allowance - with allowance	494,000		0
Commercial | Commercial and industrial
Unpaid Principal Balance - with no allowance	1,065,000		563,000
Recorded Investment - with no allowance	1,065,000		563,000
Related Allowance - with no allowance	0		0
Unpaid Principal Balance - with allowance	3,580,000		904,000
Recorded investment - with allowance	3,580,000		904,000
Related Allowance - with allowance	1,264,000		149,000
Commercial | Loans secured by farm land
Unpaid Principal Balance - with no allowance	86,000		129,000
Recorded Investment - with no allowance	86,000		129,000
Related Allowance - with no allowance	0		0
Unpaid Principal Balance - with allowance	335,000		478,000
Recorded investment - with allowance	335,000		478,000
Related Allowance - with allowance	34,000		48,000
Commercial | Agricultural loans
Unpaid Principal Balance - with no allowance	0		76,000
Recorded Investment - with no allowance	0		76,000
Related Allowance - with no allowance	0		0
Commercial | Construction Loans
Unpaid Principal Balance - with allowance	0		1,261,000
Recorded investment - with allowance	0		1,261,000
Related Allowance - with allowance	$ 0	$ 674,000	$ 678,000

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