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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Loan Modifications (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2023	Sep. 30, 2024
Term Extension | Residential mortgage
Financing Receivable, Modified [Line Items]
Amortized cost basis	$ 5		$ 36	$ 5
% of Total Class of Financing Receivables	0.00%		0.03%	0.00%
Term Extension | Other consumer
Financing Receivable, Modified [Line Items]
Amortized cost basis	$ 1			$ 1
% of Total Class of Financing Receivables	0.02%			0.02%
Term Extension | Commercial real estate
Financing Receivable, Modified [Line Items]
Amortized cost basis		$ 4,826	$ 4,826
% of Total Class of Financing Receivables		0.65%	0.65%
Term Extension | Commercial and industrial
Financing Receivable, Modified [Line Items]
Amortized cost basis				$ 1,500
% of Total Class of Financing Receivables				1.26%
Term Extension | Agricultural operating
Financing Receivable, Modified [Line Items]
Amortized cost basis			$ 179
% of Total Class of Financing Receivables			0.73%
Other-Than-Insignificant Payment Delay | Residential mortgage
Financing Receivable, Modified [Line Items]
Amortized cost basis			$ 69	$ 240
% of Total Class of Financing Receivables			0.06%	0.18%
Other-Than-Insignificant Payment Delay | Other consumer
Financing Receivable, Modified [Line Items]
Amortized cost basis			$ 20
% of Total Class of Financing Receivables			0.31%
Other-Than-Insignificant Payment Delay | Commercial real estate
Financing Receivable, Modified [Line Items]
Amortized cost basis	$ 1,182			$ 1,182
% of Total Class of Financing Receivables	0.16%			0.16%
Other-Than-Insignificant Payment Delay | Commercial and industrial
Financing Receivable, Modified [Line Items]
Amortized cost basis				$ 836
% of Total Class of Financing Receivables				0.70%

X

- Definition

Amortized cost excluding accrued interest, of financing receivable modified during period for debtor experiencing financial difficulty.

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