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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Term Extensions (Details) - Extended Maturity - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Other-Than-Insignificant Payment Delay | Commercial real estate
Financing Receivable, Modified [Line Items]
Weighted average term increase from modification	3 months		3 months
Other-Than-Insignificant Payment Delay | Residential mortgage
Financing Receivable, Modified [Line Items]
Weighted average term increase from modification	3 months	4 months	3 months	3 months
Other-Than-Insignificant Payment Delay | Commercial and industrial
Financing Receivable, Modified [Line Items]
Weighted average term increase from modification			3 months
Term Extension | Commercial real estate
Financing Receivable, Modified [Line Items]
Weighted average term increase from modification		20 months
Term Extension | Residential mortgage
Financing Receivable, Modified [Line Items]
Weighted average term increase from modification			55 months
Term Extension | Commercial and industrial
Financing Receivable, Modified [Line Items]
Weighted average term increase from modification		11 months	12 months	11 months
Term Extension | Agricultural operating
Financing Receivable, Modified [Line Items]
Weighted average term increase from modification			8 months
Term Extension And Principal Forgiveness | Other consumer
Financing Receivable, Modified [Line Items]
Weighted average term increase from modification			3 months
Decrease from modification			$ 2

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