LOANS - Loan Balances and Allowance for Loan Losses for Each Impairment Method (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
LOANS
Loans receivable: Individually Evaluated	$ 13,309		$ 15,734
Loans receivable: Collectively Evaluated	1,676,937		1,549,115
Loans receivable	1,690,246		1,564,849
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	427		740
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	14,743		12,126
Allowance for loan losses	16,170	$ 14,547	13,537	$ 12,700	$ 12,375	$ 11,385
Commercial
LOANS
Loans receivable: Individually Evaluated	12,634		15,090
Loans receivable: Collectively Evaluated	1,069,721		963,281
Loans receivable	1,082,355		978,371
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	427		740
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	9,811		7,553
Allowance for loan losses	10,238	8,894	8,293	7,433	7,118	6,308
Commercial | Real estate loan
LOANS
Loans receivable: Individually Evaluated	12,080		10,926
Loans receivable: Collectively Evaluated	646,781		558,914
Loans receivable	658,861		569,840
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	427		669
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	5,620		3,736
Allowance for loan losses	6,047	4,982	4,405	3,820	3,452	3,051
Commercial | Commercial and industrial
LOANS
Loans receivable: Individually Evaluated	369		2,503
Loans receivable: Collectively Evaluated	171,889		156,570
Loans receivable	172,258		159,073
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0		71
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	2,823		2,652
Allowance for loan losses	2,823	2,792	2,723	2,540	2,781	2,245
Commercial | Paycheck Protection Program - 1st Draw
LOANS
Loans receivable: Individually Evaluated	0		0
Loans receivable: Collectively Evaluated	24		1,356
Loans receivable	24		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	2,011		25,508
Loans receivable	2,011		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	83,725		81,301
Loans receivable	83,725		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	76,194		60,579
Commercial | Commercial Construction And Land
LOANS
Loans receivable: Individually Evaluated	47		0
Loans receivable: Collectively Evaluated	76,147		60,579
Loans receivable	76,194		60,579
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0		0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	684		637
Allowance for loan losses	684	515	637	559	452	454
Commercial | Loans secured by farm land
LOANS
Loans receivable: Individually Evaluated	78		83
Loans receivable: Collectively Evaluated	12,761		11,038
Loans receivable	12,839		11,121
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0		0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	113		115
Allowance for loan losses	113	112	115	112	113	120
Commercial | Multi-family (5 or more) residential
LOANS
Loans receivable: Individually Evaluated	0		1,578
Loans receivable: Collectively Evaluated	59,315		48,511
Loans receivable	59,315		50,089
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0		0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	427		215
Allowance for loan losses	427	339	215	196	150	236
Commercial | Agricultural loans
LOANS
Loans receivable: Individually Evaluated	60		0
Loans receivable: Collectively Evaluated	2,432		2,351
Loans receivable	2,492		2,351
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0		0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	22		25
Allowance for loan losses	22	23	25	33	25	34
Commercial | Other commercial loans
LOANS
Loans receivable: Individually Evaluated	0		0
Loans receivable: Collectively Evaluated	14,636		17,153
Loans receivable	14,636		17,153
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0		0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	122		173
Allowance for loan losses	122	131	173	173	145	168
Residential mortgage
LOANS
Loans receivable: Individually Evaluated	675		644
Loans receivable: Collectively Evaluated	589,309		568,702
Loans receivable	589,984		569,346
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0		0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	4,697		4,338
Allowance for loan losses	4,697	4,392	4,338	4,359	4,355	4,253
Residential mortgage | Real estate loan | first liens
LOANS
Loans receivable: Individually Evaluated	576		630
Loans receivable: Collectively Evaluated	492,278		482,999
Loans receivable	492,854		483,629
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0		0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	3,919		3,650
Allowance for loan losses	3,919	3,689	3,650	3,566	3,536	3,524
Residential mortgage | Real estate loan | junior liens
LOANS
Loans receivable: Individually Evaluated	31		14
Loans receivable: Collectively Evaluated	24,177		23,300
Loans receivable	24,208		23,314
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0		0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	194		184
Allowance for loan losses	194	180	184	321	327	349
Residential mortgage | Home equity lines of credit
LOANS
Loans receivable: Individually Evaluated	68		0
Loans receivable: Collectively Evaluated	42,904		39,252
Loans receivable	42,972		39,252
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0		0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	333		302
Allowance for loan losses	333	308	302	283	294	281
Residential mortgage | 1-4 Family residential construction
LOANS
Loans receivable: Individually Evaluated	0		0
Loans receivable: Collectively Evaluated	29,950		23,151
Loans receivable	29,950		23,151
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0		0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	251		202
Allowance for loan losses	251	215	202	189	198	99
Consumer
LOANS
Loans receivable: Individually Evaluated	0		0
Loans receivable: Collectively Evaluated	17,907		17,132
Loans receivable	17,907		17,132
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment2	0		0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment1	235		235
Allowance for loan losses	235	261	235	237	231	239
Unallocated
LOANS
Allowance for loan losses	$ 1,000	$ 1,000	$ 671	$ 671	$ 671	$ 585