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LOANS - Allowance for Loan Losses (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
LOANS
Allowance for Loan losses	$ 12,375,000	$ 11,026,000	$ 11,385,000	$ 9,836,000
Allowance for Loan losses, Charge-offs	(1,220,000)	(2,249,000)	(1,278,000)	(2,443,000)
Allowance for Loan losses, Recoveries	15,000	35,000	60,000	67,000
Allowance for Loan losses, Provision (Credit)	1,530,000	1,941,000	2,533,000	3,293,000
Allowance for Loan losses	12,700,000	10,753,000	12,700,000	10,753,000
Commercial
LOANS
Allowance for Loan losses	7,118,000	5,858,000	6,308,000	4,788,000
Allowance for Loan losses, Charge-offs	(1,194,000)	(2,219,000)	(1,194,000)	(2,343,000)
Allowance for Loan losses, Recoveries	6,000	0	22,000	0
Allowance for Loan losses, Provision (Credit)	1,503,000	1,990,000	2,297,000	3,184,000
Allowance for Loan losses	7,433,000	5,629,000	7,433,000	5,629,000
Commercial | Commercial loan of $3,500,000
LOANS
Allowance for Loan losses, Charge-offs		(2,219,000)		(2,219,000)
Commercial | Real estate loan
LOANS
Allowance for Loan losses	3,452,000	2,426,000	3,051,000	1,921,000
Allowance for Loan losses, Charge-offs	0	0	0	0
Allowance for Loan losses, Recoveries	0	0	2,000	0
Allowance for Loan losses, Provision (Credit)	368,000	(40,000)	767,000	465,000
Allowance for Loan losses	3,820,000	2,386,000	3,820,000	2,386,000
Commercial | Commercial and industrial
LOANS
Allowance for Loan losses	2,781,000	2,496,000	2,245,000	1,391,000
Allowance for Loan losses, Charge-offs	(1,194,000)	(2,219,000)	(1,194,000)	(2,236,000)
Allowance for Loan losses, Recoveries	6,000	0	20,000	0
Allowance for Loan losses, Provision (Credit)	947,000	1,974,000	1,469,000	3,096,000
Allowance for Loan losses	2,540,000	2,251,000	2,540,000	2,251,000
Commercial | Construction Loans
LOANS
Allowance for Loan losses			454,000
Allowance for Loan losses	559,000		559,000
Commercial | Commercial Construction And Land
LOANS
Allowance for Loan losses	452,000	420,000	454,000	966,000
Allowance for Loan losses, Charge-offs	0	0	0	(107,000)
Allowance for Loan losses, Recoveries	0	0	0	0
Allowance for Loan losses, Provision (Credit)	107,000	20,000	105,000	(419,000)
Allowance for Loan losses	559,000	440,000	559,000	440,000
Commercial | Loans secured by farm land
LOANS
Allowance for Loan losses	113,000	146,000	120,000	158,000
Allowance for Loan losses, Charge-offs	0	0	0	0
Allowance for Loan losses, Recoveries	0	0	0	0
Allowance for Loan losses, Provision (Credit)	(1,000)	(25,000)	(8,000)	(37,000)
Allowance for Loan losses	112,000	121,000	112,000	121,000
Commercial | Multi-family (5 or more) residential
LOANS
Allowance for Loan losses	150,000	163,000	236,000	156,000
Allowance for Loan losses, Charge-offs	0	0	0	0
Allowance for Loan losses, Recoveries	0	0	0	0
Allowance for Loan losses, Provision (Credit)	46,000	64,000	(40,000)	71,000
Allowance for Loan losses	196,000	227,000	196,000	227,000
Commercial | Agricultural loans
LOANS
Allowance for Loan losses	25,000	40,000	34,000	41,000
Allowance for Loan losses, Charge-offs	0	0	0	0
Allowance for Loan losses, Recoveries	0	0	0	0
Allowance for Loan losses, Provision (Credit)	8,000	(3,000)	(1,000)	(4,000)
Allowance for Loan losses	33,000	37,000	33,000	37,000
Commercial | Other commercial loans
LOANS
Allowance for Loan losses	145,000	167,000	168,000	155,000
Allowance for Loan losses, Charge-offs	0	0	0	0
Allowance for Loan losses, Recoveries	0	0	0	0
Allowance for Loan losses, Provision (Credit)	28,000	0	5,000	12,000
Allowance for Loan losses	173,000	167,000	173,000	167,000
Residential mortgage
LOANS
Allowance for Loan losses	4,355,000	4,320,000	4,253,000	4,182,000
Allowance for Loan losses, Charge-offs	0	0	(11,000)	0
Allowance for Loan losses, Recoveries	1,000	27,000	5,000	32,000
Allowance for Loan losses, Provision (Credit)	3,000	(66,000)	112,000	67,000
Allowance for Loan losses	4,359,000	4,281,000	4,359,000	4,281,000
Residential mortgage | first liens
LOANS
Allowance for Loan losses			3,524,000	3,405,000
Allowance for Loan losses, Charge-offs			(11,000)	0
Allowance for Loan losses, Recoveries			3,000	28,000
Allowance for Loan losses, Provision (Credit)			50,000	32,000
Allowance for Loan losses	3,566,000	3,465,000	3,566,000	3,465,000
Residential mortgage | junior liens
LOANS
Allowance for Loan losses			349,000	384,000
Allowance for Loan losses, Charge-offs			0	0
Allowance for Loan losses, Recoveries			0	1,000
Allowance for Loan losses, Provision (Credit)			(28,000)	(27,000)
Allowance for Loan losses	321,000	358,000	321,000	358,000
Residential mortgage | Real estate loan | first liens
LOANS
Allowance for Loan losses	3,536,000	3,531,000	3,524,000
Allowance for Loan losses, Charge-offs	0	0
Allowance for Loan losses, Recoveries	1,000	26,000
Allowance for Loan losses, Provision (Credit)	29,000	(92,000)
Allowance for Loan losses	3,566,000	3,465,000	3,566,000	3,465,000
Residential mortgage | Real estate loan | junior liens
LOANS
Allowance for Loan losses	327,000	365,000	349,000
Allowance for Loan losses, Charge-offs	0	0
Allowance for Loan losses, Recoveries	0	0
Allowance for Loan losses, Provision (Credit)	(6,000)	(7,000)
Allowance for Loan losses	321,000	358,000	321,000	358,000
Residential mortgage | Construction Loans
LOANS
Allowance for Loan losses			99,000
Allowance for Loan losses	189,000		189,000
Residential mortgage | Home equity lines of credit
LOANS
Allowance for Loan losses	294,000	287,000	281,000	276,000
Allowance for Loan losses, Charge-offs	0	0	0	0
Allowance for Loan losses, Recoveries	0	1,000	2,000	3,000
Allowance for Loan losses, Provision (Credit)	(11,000)	1,000	0	10,000
Allowance for Loan losses	283,000	289,000	283,000	289,000
Residential mortgage | 1-4 Family residential construction
LOANS
Allowance for Loan losses	198,000	137,000	99,000	117,000
Allowance for Loan losses, Charge-offs	0	0	0	0
Allowance for Loan losses, Recoveries	0	0	0	0
Allowance for Loan losses, Provision (Credit)	(9,000)	32,000	90,000	52,000
Allowance for Loan losses	189,000	169,000	189,000	169,000
Consumer
LOANS
Allowance for Loan losses	231,000	263,000	239,000	281,000
Allowance for Loan losses, Charge-offs	(26,000)	(30,000)	(73,000)	(100,000)
Allowance for Loan losses, Recoveries	8,000	8,000	33,000	35,000
Allowance for Loan losses, Provision (Credit)	24,000	17,000	38,000	42,000
Allowance for Loan losses	237,000	258,000	237,000	258,000
Unallocated
LOANS
Allowance for Loan losses	671,000	585,000	585,000	585,000
Allowance for Loan losses, Charge-offs	0	0	0	0
Allowance for Loan losses, Recoveries	0	0	0	0
Allowance for Loan losses, Provision (Credit)	0	0	86,000	0
Allowance for Loan losses	$ 671,000	$ 585,000	$ 671,000	$ 585,000

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