LOANS AND ALLOWANCE FOR CREDIT LOSSES - Past due (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023
Current - 29 Days Past Due	$ 908,615	$ 902,853
Total	922,494	911,078	$ 871,239
90 Days or Greater Past Due and Still Accruing Interest	495	1,065
Financial Asset, 30 to 59 Days Past Due
Total	3,888	2,182
Financing Receivables, 60 to 89 Days Past Due
Total	4,957	383
Financing Receivables, Equal to Greater than 90 Days Past Due
Total	5,034	5,660
Financial Asset, Past Due
Total	13,879	8,225
Real Estate
Current - 29 Days Past Due	811,114	803,890
Total	824,217	811,493	774,688
90 Days or Greater Past Due and Still Accruing Interest	495	1,065
Real Estate | Financial Asset, 30 to 59 Days Past Due
Total	3,723	2,155
Real Estate | Financing Receivables, 60 to 89 Days Past Due
Total	4,957	379
Real Estate | Financing Receivables, Equal to Greater than 90 Days Past Due
Total	4,423	5,069
Real Estate | Financial Asset, Past Due
Total	13,103	7,603
Agricultural
Current - 29 Days Past Due	990	671
Total	990	671	862
Commercial and Industrial
Current - 29 Days Past Due	64,204	66,312
Total	64,959	66,909	61,313
Commercial and Industrial | Financial Asset, 30 to 59 Days Past Due
Total	144	6
Commercial and Industrial | Financing Receivables, Equal to Greater than 90 Days Past Due
Total	611	591
Commercial and Industrial | Financial Asset, Past Due
Total	755	597
Consumer
Current - 29 Days Past Due	6,229	5,799
Total	6,250	5,824	6,129
Consumer | Financial Asset, 30 to 59 Days Past Due
Total	21	21
Consumer | Financing Receivables, 60 to 89 Days Past Due
Total		4
Consumer | Financial Asset, Past Due
Total	21	25
State and Political Subdivisions
Current - 29 Days Past Due	26,078	26,181
Total	$ 26,078	$ 26,181	$ 28,247