LOANS AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Allowance for Credit Losses Loans by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Allowance for Credit Losses - Loans:
Beginning of the period	$ 22,436	$ 22,679	$ 22,908	$ 17,939	$ 17,939
Charge-offs	(12)	(40)	(17)	(97)	(160)
Recoveries	16	89	74	123	611
(Reversals)/additions to ACL - Loans via provision for credit losses charged to operations	(1,262)	436	(1,787)	493	(188)
Ending of the period	21,178	23,164	21,178	23,164	22,908
Cumulative Change in Accounting Principal for Adoption | Accounting Standards Update 2016-13
Allowance for Credit Losses - Loans:
Beginning of the period				4,706	4,706
Commercial/Agricultural Real Estate
Allowance for Credit Losses - Loans:
Beginning of the period	18,255	18,496	18,784	14,085	14,085
Charge-offs	0	(14)	0	(46)	(46)
Recoveries	2	27	41	30	489
(Reversals)/additions to ACL - Loans via provision for credit losses charged to operations	(1,224)	424	(1,792)	354	(254)
Ending of the period	17,033	18,933	17,033	18,933	18,784
Commercial/Agricultural Real Estate | Cumulative Change in Accounting Principal for Adoption | Accounting Standards Update 2016-13
Allowance for Credit Losses - Loans:
Beginning of the period				4,510	4,510
C&I/Agricultural operating:
Allowance for Credit Losses - Loans:
Beginning of the period	1,166	1,848	1,105	2,318	2,318
Charge-offs	0	0	0	0	0
Recoveries	10	16	25	31	47
(Reversals)/additions to ACL - Loans via provision for credit losses charged to operations	(59)	(406)	(13)	(560)	(929)
Ending of the period	1,117	1,458	1,117	1,458	1,105
C&I/Agricultural operating: | Cumulative Change in Accounting Principal for Adoption | Accounting Standards Update 2016-13
Allowance for Credit Losses - Loans:
Beginning of the period				(331)	(331)
Residential mortgage:
Allowance for Credit Losses - Loans:
Beginning of the period	2,765	2,000	2,744	599	599
Charge-offs	0	(10)	0	(24)	(78)
Recoveries	2	36	3	40	42
(Reversals)/additions to ACL - Loans via provision for credit losses charged to operations	17	426	37	718	1,062
Ending of the period	2,784	2,452	2,784	2,452	2,744
Residential mortgage: | Cumulative Change in Accounting Principal for Adoption | Accounting Standards Update 2016-13
Allowance for Credit Losses - Loans:
Beginning of the period				1,119	1,119
Consumer installment:
Allowance for Credit Losses - Loans:
Beginning of the period	250	335	275	129	129
Charge-offs	(12)	(16)	(17)	(27)	(36)
Recoveries	2	10	5	22	33
(Reversals)/additions to ACL - Loans via provision for credit losses charged to operations	4	(8)	(19)	(19)	(67)
Ending of the period	$ 244	321	244	321	275
Consumer installment: | Cumulative Change in Accounting Principal for Adoption | Accounting Standards Update 2016-13
Allowance for Credit Losses - Loans:
Beginning of the period				216	216
Unallocated
Allowance for Credit Losses - Loans:
Beginning of the period		0	$ 0	808	808
Charge-offs		0		0	0
Recoveries		0		0	0
(Reversals)/additions to ACL - Loans via provision for credit losses charged to operations		0		0	0
Ending of the period		$ 0		0	0
Unallocated | Cumulative Change in Accounting Principal for Adoption | Accounting Standards Update 2016-13
Allowance for Credit Losses - Loans:
Beginning of the period				$ (808)	$ (808)