LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES - Allowance for Credit Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
Balance at beginning of period	$ 21,699	$ 21,153	$ 18,552
Charge-offs	(858)	(2,673)	(1,329)
Recoveries	77	43	49
Provision	1,888	3,176	5,492
Balance at end of period	22,806	21,699	21,153
Allowance for credit loss on PCD acquired loans			1,689
Consumer [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
Balance at beginning of period	1,338	1,412	135
Charge-offs	(327)	(107)	(365)
Recoveries	41	22	40
Provision	149	11	(115)
Balance at end of period	1,201	1,338	1,412
Allowance for credit loss on PCD acquired loans			677
Other Commercial Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
Balance at beginning of period	3,766	2,313	1,040
Charge-offs	(491)	(2,561)	(963)
Recoveries	36	21	9
Provision	(777)	3,993	1,727
Balance at end of period	2,534	3,766	2,313
Allowance for credit loss on PCD acquired loans			828
Other Agricultural Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
Balance at beginning of period	133	270	489
Charge-offs	0	0	0
Recoveries	0	0	0
Provision	(18)	(137)	0
Balance at end of period	115	133	270
Allowance for credit loss on PCD acquired loans			0
State and Political Subdivision Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
Balance at beginning of period	61	45	322
Charge-offs	0	0	0
Recoveries	0	0	0
Provision	(6)	16	3
Balance at end of period	55	61	45
Allowance for credit loss on PCD acquired loans			0
Unallocated [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
Balance at beginning of period	356	367	0
Charge-offs	0	0	0
Recoveries	0	0	0
Provision	(341)	(11)	(359)
Balance at end of period	15	356	367
Allowance for credit loss on PCD acquired loans			0
ASU 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
Balance at beginning of period			(3,300)
ASU 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Consumer [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
Balance at beginning of period			1,040
ASU 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Other Commercial Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
Balance at beginning of period			(328)
ASU 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Other Agricultural Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
Balance at beginning of period			(219)
ASU 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | State and Political Subdivision Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
Balance at beginning of period			(280)
ASU 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Unallocated [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
Balance at beginning of period			726
Residential [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
Charge-offs	0	(5)
Residential [Member] | Real Estate Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
Balance at beginning of period	1,940	2,354	1,056
Charge-offs	0	(5)	(1)
Recoveries	0	0	0
Provision	1,172	(409)	1,112
Balance at end of period	3,112	1,940	2,354
Allowance for credit loss on PCD acquired loans			108
Residential [Member] | ASU 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Real Estate Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
Balance at beginning of period			79
Commercial [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
Charge-offs	(40)	0
Commercial [Member] | Real Estate Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
Balance at beginning of period	9,174	9,178	10,120
Charge-offs	(40)	0	0
Recoveries	0	0	0
Provision	883	(4)	2,089
Balance at end of period	10,017	9,174	9,178
Allowance for credit loss on PCD acquired loans			39
Commercial [Member] | ASU 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Real Estate Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
Balance at beginning of period			(3,070)
Agricultural [Member] | Real Estate Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
Balance at beginning of period	3,529	3,264	4,589
Charge-offs	0	0	0
Recoveries	0	0	0
Provision	1,312	265	(180)
Balance at end of period	4,841	3,529	3,264
Allowance for credit loss on PCD acquired loans			0
Agricultural [Member] | ASU 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Real Estate Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
Balance at beginning of period			(1,145)
Construction [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
Charge-offs	0	0
Construction [Member] | Real Estate Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
Balance at beginning of period	1,402	1,950	801
Charge-offs	0	0	0
Recoveries	0	0	0
Provision	(486)	(548)	1,215
Balance at end of period	$ 916	$ 1,402	1,950
Allowance for credit loss on PCD acquired loans			37
Construction [Member] | ASU 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Real Estate Loans [Member]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES [Abstract]
Balance at beginning of period			$ (103)