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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Without an Allowance	$ 14,426	$ 12,939	$ 13,204
Allowance Allocation	15,042	13,184	13,456
Collateralized Loan Obligations
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	21,345	28,622
Without an Allowance	19,197	24,332
With an Allowance	2,148	4,290
Allowance Allocation	343	791
Collateralized Loan Obligations | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	18,000	25,149
Collateralized Loan Obligations | Other Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	3,345	3,473
Commercial/Agricultural Real Estate | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Without an Allowance	4,547	10,347	10,556
Allowance Allocation	4,778	10,359	10,570
Commercial/Agricultural Real Estate | Commercial real estate | Collateralized Loan Obligations
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	8,214	15,086
Without an Allowance	6,784	11,350
With an Allowance	1,430	3,736
Allowance Allocation	203	703
Commercial/Agricultural Real Estate | Commercial real estate | Collateralized Loan Obligations | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	8,214	15,086
Commercial/Agricultural Real Estate | Commercial real estate | Collateralized Loan Obligations | Other Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	0	0
Commercial/Agricultural Real Estate | Agricultural real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Without an Allowance	6,193	391	469
Allowance Allocation	6,193	391	469
Commercial/Agricultural Real Estate | Agricultural real estate | Collateralized Loan Obligations
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	6,193	6,605
Without an Allowance	6,193	6,605
With an Allowance	0	0
Allowance Allocation	0	0
Commercial/Agricultural Real Estate | Agricultural real estate | Collateralized Loan Obligations | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	6,193	6,605
Commercial/Agricultural Real Estate | Agricultural real estate | Collateralized Loan Obligations | Other Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	0	0
Commercial/Agricultural Real Estate | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Without an Allowance	106	54	94
Allowance Allocation	106	54	94
Commercial/Agricultural Real Estate | Construction and land development | Collateralized Loan Obligations
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	106	313
Without an Allowance	106	313
With an Allowance	0	0
Allowance Allocation	0	0
Commercial/Agricultural Real Estate | Construction and land development | Collateralized Loan Obligations | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	106	313
Commercial/Agricultural Real Estate | Construction and land development | Collateralized Loan Obligations | Other Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	0	0
C&I/Agricultural operating: | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Without an Allowance	1,775
Allowance Allocation	1,956
C&I/Agricultural operating: | Commercial and industrial | Collateralized Loan Obligations
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	2,394	2,219
Without an Allowance	2,160	2,219
With an Allowance	234	0
Allowance Allocation	88	0
C&I/Agricultural operating: | Commercial and industrial | Collateralized Loan Obligations | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	0	0
C&I/Agricultural operating: | Commercial and industrial | Collateralized Loan Obligations | Other Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	2,394	2,219
C&I/Agricultural operating: | Agricultural operating
Accounts, Notes, Loans and Financing Receivable [Line Items]
Without an Allowance	901	1,180	1,373
Allowance Allocation	901	1,180	1,373
C&I/Agricultural operating: | Agricultural operating | Collateralized Loan Obligations
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	901	1,181
Without an Allowance	901	1,181
With an Allowance	0	0
Allowance Allocation	0	0
C&I/Agricultural operating: | Agricultural operating | Collateralized Loan Obligations | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	0	0
C&I/Agricultural operating: | Agricultural operating | Collateralized Loan Obligations | Other Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	901	1,181
Residential mortgage: | Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Without an Allowance	767	934	685
Allowance Allocation	971	1,167	923
Residential mortgage: | Residential mortgage | Collateralized Loan Obligations
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	3,487	3,145
Without an Allowance	3,003	2,591
With an Allowance	484	554
Allowance Allocation	52	88
Residential mortgage: | Residential mortgage | Collateralized Loan Obligations | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	3,487	3,145
Residential mortgage: | Residential mortgage | Collateralized Loan Obligations | Other Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	0	0
Consumer installment: | Originated indirect paper
Accounts, Notes, Loans and Financing Receivable [Line Items]
Without an Allowance	19	15	26
Allowance Allocation	19	15	26
Consumer installment: | Originated indirect paper | Collateralized Loan Obligations
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	44	44
Without an Allowance	44	44
With an Allowance	0	0
Allowance Allocation	0	0
Consumer installment: | Originated indirect paper | Collateralized Loan Obligations | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	0	0
Consumer installment: | Originated indirect paper | Collateralized Loan Obligations | Other Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	44	44
Consumer installment: | Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Without an Allowance	1	18	1
Allowance Allocation	1	18	$ 1
Consumer installment: | Other consumer | Collateralized Loan Obligations
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	6	29
Without an Allowance	6	29
With an Allowance	0	0
Allowance Allocation	0	0
Consumer installment: | Other consumer | Collateralized Loan Obligations | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	0	0
Consumer installment: | Other consumer | Collateralized Loan Obligations | Other Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Type	$ 6	$ 29

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-Topic 310
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-Name Accounting Standards Codification
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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