LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES, Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	$ 18,552	$ 17,304	$ 15,815
Allowance for credit loss on PCD acquired loans	1,689
Charge-offs	(1,329)	(472)	(214)
Recoveries	49	37	153
Provision	5,492	1,683	1,550
Balance at end of period	21,153	18,552	17,304
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	(3,300)
Balance at end of period		(3,300)
Residential [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Charge-offs	(1)
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Charge-offs	0
Construction [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Charge-offs	0
Real Estate Loans [Member] | Residential [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	1,056	1,147	1,174
Allowance for credit loss on PCD acquired loans	108
Charge-offs	(1)	0	0
Recoveries	0	0	0
Provision	1,112	(91)	(27)
Balance at end of period	2,354	1,056	1,147
Real Estate Loans [Member] | Residential [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	79
Balance at end of period		79
Real Estate Loans [Member] | Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	10,120	8,099	6,216
Allowance for credit loss on PCD acquired loans	39
Charge-offs	0	0	(54)
Recoveries	0	3	89
Provision	2,089	2,018	1,848
Balance at end of period	9,178	10,120	8,099
Real Estate Loans [Member] | Commercial [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	(3,070)
Balance at end of period		(3,070)
Real Estate Loans [Member] | Agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	4,589	4,729	4,953
Allowance for credit loss on PCD acquired loans	0
Charge-offs	0	0	0
Recoveries	0	0	0
Provision	(180)	(140)	(224)
Balance at end of period	3,264	4,589	4,729
Real Estate Loans [Member] | Agricultural [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	(1,145)
Balance at end of period		(1,145)
Real Estate Loans [Member] | Construction [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	801	434	122
Allowance for credit loss on PCD acquired loans	37
Charge-offs	0	0	0
Recoveries	0	0	0
Provision	1,215	367	312
Balance at end of period	1,950	801	434
Real Estate Loans [Member] | Construction [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	(103)
Balance at end of period		(103)
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	135	262	321
Allowance for credit loss on PCD acquired loans	677
Charge-offs	(365)	(37)	(27)
Recoveries	40	21	21
Provision	(31)	(111)	(53)
Balance at end of period	1,496	135	262
Consumer [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	1,040
Balance at end of period		1,040
Other Commercial Loans [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	1,040	1,023	1,226
Allowance for credit loss on PCD acquired loans	828
Charge-offs	(963)	(435)	(133)
Recoveries	9	13	43
Provision	1,643	439	(113)
Balance at end of period	2,229	1,040	1,023
Other Commercial Loans [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	(328)
Balance at end of period		(328)
Other Agricultural Loans [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	489	558	864
Allowance for credit loss on PCD acquired loans	0
Charge-offs	0	0	0
Recoveries	0	0	0
Provision	0	(69)	(306)
Balance at end of period	270	489	558
Other Agricultural Loans [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	(219)
Balance at end of period		(219)
State and Political Subdivision Loans [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	322	281	479
Allowance for credit loss on PCD acquired loans	0
Charge-offs	0	0	0
Recoveries	0	0	0
Provision	3	41	(198)
Balance at end of period	45	322	281
State and Political Subdivision Loans [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	(280)
Balance at end of period		(280)
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	0	771	460
Allowance for credit loss on PCD acquired loans	0
Charge-offs	0	0	0
Recoveries	0	0	0
Provision	(359)	(771)	311
Balance at end of period	367	0	$ 771
Unallocated [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	$ 726
Balance at end of period		$ 726