LOANS - Loan Balances and Allowance for Loan Losses for Each Impairment Method (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
LOANS
Loans receivable: Individually Evaluated	$ 19,358	$ 15,734
Loans receivable: Collectively Evaluated	1,720,682	1,549,115
Loans receivable	1,740,040	1,564,849
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	453	740
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	15,162	12,126
Allowance for loan losses	16,615	13,537	$ 11,385	$ 9,836
Commercial
LOANS
Loans receivable: Individually Evaluated	18,754	15,090
Loans receivable: Collectively Evaluated	1,092,744	963,281
Loans receivable	1,111,498	978,371
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	453	740
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	10,845	7,553
Allowance for loan losses	11,298	8,293	6,308	4,788
Commercial | Real estate loan
LOANS
Loans receivable: Individually Evaluated	7,154	10,926
Loans receivable: Collectively Evaluated	675,095	558,914
Loans receivable	682,249	569,840
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	427	669
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	6,647	3,736
Allowance for loan losses	7,074	4,405	3,051	1,921
Commercial | Commercial and industrial
LOANS
Loans receivable: Individually Evaluated	11,223	2,503
Loans receivable: Collectively Evaluated	167,048	156,570
Loans receivable	178,271	159,073
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	26	71
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	2,883	2,652
Allowance for loan losses	2,909	2,723	2,245	1,391
Commercial | Paycheck Protection Program - 1st Draw
LOANS
Loans receivable: Individually Evaluated	0	0
Loans receivable: Collectively Evaluated	5	1,356
Loans receivable	5	1,356
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	0	0
Allowance for loan losses	0	0
Commercial | Paycheck Protection Program - 2nd Draw
LOANS
Loans receivable: Individually Evaluated	0	0
Loans receivable: Collectively Evaluated	163	25,508
Loans receivable	163	25,508
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	0	0
Allowance for loan losses	0	0
Commercial | Political subdivisions
LOANS
Loans receivable: Individually Evaluated	0	0
Loans receivable: Collectively Evaluated	90,719	81,301
Loans receivable	90,719	81,301
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	0	0
Allowance for loan losses	0	0
Commercial | Construction Loans
LOANS
Loans receivable	73,963	60,579
Commercial | Commercial Construction And Land
LOANS
Loans receivable: Individually Evaluated	244	0
Loans receivable: Collectively Evaluated	73,719	60,579
Loans receivable	73,963	60,579
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	647	637
Allowance for loan losses	647	637	454	966
Commercial | Loans secured by farm land
LOANS
Loans receivable: Individually Evaluated	76	83
Loans receivable: Collectively Evaluated	12,874	11,038
Loans receivable	12,950	11,121
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	112	115
Allowance for loan losses	112	115	120	158
Commercial | Multi-family (5 or more) residential
LOANS
Loans receivable: Individually Evaluated	0	1,578
Loans receivable: Collectively Evaluated	55,886	48,511
Loans receivable	55,886	50,089
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	411	215
Allowance for loan losses	411	215	236	156
Commercial | Agricultural loans
LOANS
Loans receivable: Individually Evaluated	57	0
Loans receivable: Collectively Evaluated	2,378	2,351
Loans receivable	2,435	2,351
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	21	25
Allowance for loan losses	21	25	34	41
Commercial | Other commercial loans
LOANS
Loans receivable: Individually Evaluated	0	0
Loans receivable: Collectively Evaluated	14,857	17,153
Loans receivable	14,857	17,153
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	124	173
Allowance for loan losses	124	173	168	155
Residential mortgage
LOANS
Loans receivable: Individually Evaluated	604	644
Loans receivable: Collectively Evaluated	608,502	568,702
Loans receivable	609,106	569,346
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	4,073	4,338
Allowance for loan losses	4,073	4,338	4,253	4,182
Residential mortgage | Real estate loan
LOANS
Loans receivable	682,249
Residential mortgage | Real estate loan | first liens
LOANS
Loans receivable: Individually Evaluated	506	630
Loans receivable: Collectively Evaluated	509,276	482,999
Loans receivable	509,782	483,629
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	3,413	3,650
Allowance for loan losses	3,413	3,650	3,524	3,405
Residential mortgage | Real estate loan | junior liens
LOANS
Loans receivable: Individually Evaluated	30	14
Loans receivable: Collectively Evaluated	24,919	23,300
Loans receivable	24,949	23,314
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	167	184
Allowance for loan losses	167	184	349	384
Residential mortgage | Construction Loans
LOANS
Loans receivable	30,577	23,151
Allowance for loan losses		202	99
Residential mortgage | Home equity lines of credit
LOANS
Loans receivable: Individually Evaluated	68	0
Loans receivable: Collectively Evaluated	43,730	39,252
Loans receivable	43,798	39,252
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	282	302
Allowance for loan losses	282	302	281	276
Residential mortgage | 1-4 Family residential construction
LOANS
Loans receivable: Individually Evaluated	0	0
Loans receivable: Collectively Evaluated	30,577	23,151
Loans receivable	30,577	23,151
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	211	202
Allowance for loan losses	211	202	99	117
Consumer
LOANS
Loans receivable: Individually Evaluated	0	0
Loans receivable: Collectively Evaluated	19,436	17,132
Loans receivable	19,436	17,132
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	244	235
Allowance for loan losses	244	235	239	281
Unallocated
LOANS
Allowance for loan losses	$ 1,000	$ 671	$ 585	$ 585