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LOANS - Allowance for Loan Losses (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
LOANS
Allowance for Loan losses				$ 11,385,000				$ 9,836,000	$ 11,385,000	$ 9,836,000
Allowance for Loan losses, Charge-offs									(1,575,000)	(2,465,000)
Allowance for Loan losses, Recoveries									66,000	101,000
Allowance for Loan losses, Provision (Credit)	$ 1,128,000	$ 1,530,000	$ 744,000	259,000	$ 620,000	$ 1,941,000	$ (176,000)	1,528,000	3,661,000	3,913,000
Allowance for Loan losses	13,537,000				11,385,000				13,537,000	11,385,000
Commercial
LOANS
Allowance for Loan losses				6,308,000				4,788,000	6,308,000	4,788,000
Allowance for Loan losses, Charge-offs									(1,464,000)	(2,343,000)
Allowance for Loan losses, Recoveries									22,000	16,000
Allowance for Loan losses, Provision (Credit)									3,427,000	3,847,000
Allowance for Loan losses	8,293,000				6,308,000				8,293,000	6,308,000
Commercial | Loan Customer Major Write Off [Member]
LOANS
Allowance for Loan losses, Charge-offs									(1,463,000)	(2,219,000)
Commercial | Real estate loan
LOANS
Allowance for Loan losses				3,051,000				1,921,000	3,051,000	1,921,000
Allowance for Loan losses, Charge-offs									0	0
Allowance for Loan losses, Recoveries									2,000	0
Allowance for Loan losses, Provision (Credit)									1,352,000	1,130,000
Allowance for Loan losses	4,405,000				3,051,000				4,405,000	3,051,000
Commercial | Commercial and industrial
LOANS
Allowance for Loan losses				2,245,000				1,391,000	2,245,000	1,391,000
Allowance for Loan losses, Charge-offs									(1,464,000)	(2,236,000)
Allowance for Loan losses, Recoveries									20,000	16,000
Allowance for Loan losses, Provision (Credit)									1,922,000	3,074,000
Allowance for Loan losses	2,723,000				2,245,000				2,723,000	2,245,000
Commercial | Commercial Construction And Land
LOANS
Allowance for Loan losses				454,000				966,000	454,000	966,000
Allowance for Loan losses, Charge-offs									0	(107,000)
Allowance for Loan losses, Recoveries									0	0
Allowance for Loan losses, Provision (Credit)									183,000	(405,000)
Allowance for Loan losses	637,000				454,000				637,000	454,000
Commercial | Loans secured by farm land
LOANS
Allowance for Loan losses				120,000				158,000	120,000	158,000
Allowance for Loan losses, Charge-offs									0	0
Allowance for Loan losses, Recoveries									0	0
Allowance for Loan losses, Provision (Credit)									(5,000)	(38,000)
Allowance for Loan losses	115,000				120,000				115,000	120,000
Commercial | Multi-family (5 or more) residential
LOANS
Allowance for Loan losses				236,000				156,000	236,000	156,000
Allowance for Loan losses, Charge-offs									0	0
Allowance for Loan losses, Recoveries									0	0
Allowance for Loan losses, Provision (Credit)									(21,000)	80,000
Allowance for Loan losses	215,000				236,000				215,000	236,000
Commercial | Agricultural loans
LOANS
Allowance for Loan losses				34,000				41,000	34,000	41,000
Allowance for Loan losses, Charge-offs									0	0
Allowance for Loan losses, Recoveries									0	0
Allowance for Loan losses, Provision (Credit)									(9,000)	(7,000)
Allowance for Loan losses	25,000				34,000				25,000	34,000
Commercial | Other commercial loans
LOANS
Allowance for Loan losses				168,000				155,000	168,000	155,000
Allowance for Loan losses, Charge-offs									0	0
Allowance for Loan losses, Recoveries									0	0
Allowance for Loan losses, Provision (Credit)									5,000	13,000
Allowance for Loan losses	173,000				168,000				173,000	168,000
Residential mortgage
LOANS
Allowance for Loan losses				4,253,000				4,182,000	4,253,000	4,182,000
Allowance for Loan losses, Charge-offs									(11,000)	0
Allowance for Loan losses, Recoveries									6,000	44,000
Allowance for Loan losses, Provision (Credit)									90,000	27,000
Allowance for Loan losses	4,338,000				4,253,000				4,338,000	4,253,000
Residential mortgage | Real estate loan | first liens
LOANS
Allowance for Loan losses				3,524,000				3,405,000	3,524,000	3,405,000
Allowance for Loan losses, Charge-offs									(11,000)	0
Allowance for Loan losses, Recoveries									4,000	39,000
Allowance for Loan losses, Provision (Credit)									133,000	80,000
Allowance for Loan losses	3,650,000				3,524,000				3,650,000	3,524,000
Residential mortgage | Real estate loan | junior liens
LOANS
Allowance for Loan losses				349,000				384,000	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)									(165,000)	(36,000)
Allowance for Loan losses	184,000				349,000				184,000	349,000
Residential mortgage | Construction Loans
LOANS
Allowance for Loan losses				99,000				117,000	99,000	117,000
Allowance for Loan losses, Charge-offs										0
Allowance for Loan losses, Recoveries										0
Allowance for Loan losses, Provision (Credit)										(18,000)
Allowance for Loan losses	202,000				99,000				202,000	99,000
Residential mortgage | Home equity lines of credit
LOANS
Allowance for Loan losses				281,000				276,000	281,000	276,000
Allowance for Loan losses, Charge-offs									0	0
Allowance for Loan losses, Recoveries									2,000	4,000
Allowance for Loan losses, Provision (Credit)									19,000	1,000
Allowance for Loan losses	302,000				281,000				302,000	281,000
Residential mortgage | 1-4 Family residential construction
LOANS
Allowance for Loan losses				99,000					99,000
Allowance for Loan losses, Charge-offs									0
Allowance for Loan losses, Recoveries									0
Allowance for Loan losses, Provision (Credit)									103,000
Allowance for Loan losses	202,000				99,000				202,000	99,000
Consumer
LOANS
Allowance for Loan losses				239,000				281,000	239,000	281,000
Allowance for Loan losses, Charge-offs									(100,000)	(122,000)
Allowance for Loan losses, Recoveries									38,000	41,000
Allowance for Loan losses, Provision (Credit)									58,000	39,000
Allowance for Loan losses	235,000				239,000				235,000	239,000
Unallocated
LOANS
Allowance for Loan losses				$ 585,000				$ 585,000	585,000	585,000
Allowance for Loan losses, Charge-offs									0	0
Allowance for Loan losses, Recoveries									0	0
Allowance for Loan losses, Provision (Credit)									86,000	0
Allowance for Loan losses	$ 671,000				$ 585,000				$ 671,000	$ 585,000

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