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LOANS - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
LOANS
Allowance for Loan losses	$ 11,385	$ 9,836
Allowance for Loan losses, Charge-offs	(11)	(48)
Allowance for Loan losses, Recoveries	28	14
Allowance for Loan losses, Provision (Credit)	259	1,528
Allowance for Loan losses	11,661	11,330
Commercial
LOANS
Allowance for Loan losses	6,308	4,788
Allowance for Loan losses, Charge-offs	0	(17)
Allowance for Loan losses, Recoveries	14	0
Allowance for Loan losses, Provision (Credit)	242	1,318
Allowance for Loan losses	6,564	6,089
Commercial | Real estate loan
LOANS
Allowance for Loan losses	3,051	1,921
Allowance for Loan losses, Charge-offs	0	0
Allowance for Loan losses, Recoveries	0	0
Allowance for Loan losses, Provision (Credit)	299	11
Allowance for Loan losses	3,350	1,932
Commercial | Commercial and industrial
LOANS
Allowance for Loan losses	2,245	1,391
Allowance for Loan losses, Charge-offs	0	(17)
Allowance for Loan losses, Recoveries	14	0
Allowance for Loan losses, Provision (Credit)	(72)	1,271
Allowance for Loan losses	2,187	2,645
Commercial | Construction Loans
LOANS
Allowance for Loan losses	454	966
Allowance for Loan losses, Charge-offs	0	0
Allowance for Loan losses, Recoveries	0	0
Allowance for Loan losses, Provision (Credit)	22	4
Allowance for Loan losses	476	970
Commercial | Loans secured by farm land
LOANS
Allowance for Loan losses	120	158
Allowance for Loan losses, Charge-offs	0	0
Allowance for Loan losses, Recoveries	0	0
Allowance for Loan losses, Provision (Credit)	(9)	(14)
Allowance for Loan losses	111	144
Commercial | Multi-family (5 or more) residential
LOANS
Allowance for Loan losses	236	156
Allowance for Loan losses, Charge-offs	0	0
Allowance for Loan losses, Recoveries	0	0
Allowance for Loan losses, Provision (Credit)	19	43
Allowance for Loan losses	255	199
Commercial | Agricultural loans
LOANS
Allowance for Loan losses	34	41
Allowance for Loan losses, Charge-offs	0	0
Allowance for Loan losses, Recoveries	0	0
Allowance for Loan losses, Provision (Credit)	(8)	(2)
Allowance for Loan losses	26	39
Commercial | Other commercial loans
LOANS
Allowance for Loan losses	168	155
Allowance for Loan losses, Charge-offs	0	0
Allowance for Loan losses, Recoveries	0	0
Allowance for Loan losses, Provision (Credit)	(9)	5
Allowance for Loan losses	159	160
Residential mortgage
LOANS
Allowance for Loan losses	4,253	4,182
Allowance for Loan losses, Charge-offs	0	0
Allowance for Loan losses, Recoveries	2	3
Allowance for Loan losses, Provision (Credit)	(55)	198
Allowance for Loan losses	4,200	4,383
Residential mortgage | Real estate loan | first liens
LOANS
Allowance for Loan losses	3,524	3,405
Allowance for Loan losses, Charge-offs	0	0
Allowance for Loan losses, Recoveries	1	1
Allowance for Loan losses, Provision (Credit)	(18)	166
Allowance for Loan losses	3,507	3,572
Residential mortgage | Real estate loan | junior liens
LOANS
Allowance for Loan losses	349	384
Allowance for Loan losses, Charge-offs	0	0
Allowance for Loan losses, Recoveries	0	1
Allowance for Loan losses, Provision (Credit)	(15)	29
Allowance for Loan losses	334	414
Residential mortgage | Construction Loans
LOANS
Allowance for Loan losses	99	117
Allowance for Loan losses, Charge-offs	0	0
Allowance for Loan losses, Recoveries	0	0
Allowance for Loan losses, Provision (Credit)	(21)	2
Allowance for Loan losses	78	119
Residential mortgage | Home equity lines of credit
LOANS
Allowance for Loan losses	281	276
Allowance for Loan losses, Charge-offs	0	0
Allowance for Loan losses, Recoveries	1	1
Allowance for Loan losses, Provision (Credit)	(1)	1
Allowance for Loan losses	281	278
Consumer
LOANS
Allowance for Loan losses	239	281
Allowance for Loan losses, Charge-offs	(11)	(31)
Allowance for Loan losses, Recoveries	12	11
Allowance for Loan losses, Provision (Credit)	(20)	12
Allowance for Loan losses	220	273
Unallocated
LOANS
Allowance for Loan losses	585	585
Allowance for Loan losses, Charge-offs	0	0
Allowance for Loan losses, Recoveries	0	0
Allowance for Loan losses, Provision (Credit)	92	0
Allowance for Loan losses	$ 677	$ 585

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