LOANS AND ALLOWANCE FOR CREDIT LOSSES - Past due (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Current - 29 Days Past Due	$ 863,515	$ 850,257
Total	871,239	858,469	$ 804,820
90 Days or Greater Past Due and Still Accruing Interest	584	308
Financial Asset, 30 to 59 Days Past Due
Total	1,438	2,755
Financing Receivables, 60 to 89 Days Past Due
Total	636	124
Financing Receivables, Equal to Greater than 90 Days Past Due
Total	5,650	5,333
Financial Asset, Past Due
Total	7,724	8,212
Real Estate
Current - 29 Days Past Due	767,595	757,445
Total	774,688	764,880
90 Days or Greater Past Due and Still Accruing Interest	584	308
Real Estate | Financial Asset, 30 to 59 Days Past Due
Total	1,433	2,682
Real Estate | Financing Receivables, 60 to 89 Days Past Due
Total	631	59
Real Estate | Financing Receivables, Equal to Greater than 90 Days Past Due
Total	5,029	4,694
Real Estate | Financial Asset, Past Due
Total	7,093	7,435
Agricultural
Current - 29 Days Past Due	862	860
Total	862	860
Commercial and Industrial
Current - 29 Days Past Due	60,692	55,313
Total	61,313	56,077
Commercial and Industrial | Financial Asset, 30 to 59 Days Past Due
Total		62
Commercial and Industrial | Financing Receivables, 60 to 89 Days Past Due
Total		63
Commercial and Industrial | Financing Receivables, Equal to Greater than 90 Days Past Due
Total	621	639
Commercial and Industrial | Financial Asset, Past Due
Total	621	764
Commercial and industrial
Total		86,999	82,539
Consumer
Current - 29 Days Past Due	6,119	5,694
Total	6,129	5,707
Consumer | Financial Asset, 30 to 59 Days Past Due
Total	5	11
Consumer | Financing Receivables, 60 to 89 Days Past Due
Total	5	2
Consumer | Financial Asset, Past Due
Total	10	13
Consumer
Total		5,415	5,402
State and Political Subdivisions
Current - 29 Days Past Due	28,247	30,945
Total	$ 28,247	30,945
Commercial Real Estate
Total		611,549	568,258
Residential Real Estate
Total		$ 154,506	$ 148,621