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LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Financial Effect of Loan Modifications (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		10 Months Ended	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Jul. 24, 2025	Sep. 30, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, interest rate reduction (in percent)	0.00%	0.10%	0.40%	0.30%
Financing receivable excluding accrued interest modified increase decrease from modification	$ 0	$ 0
Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					$ 21,126	$ 12,606
30 - 59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					1,962	0
60 - 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					0	0
Greater Than 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					0	0
Total Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					1,962	0
Principal Forgiveness
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated	0	0	$ 0	$ 0
Financing receivable excluding accrued interest modified increase decrease from modification			0	0
Payment Delay
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated	0	6,139	10,550	11,764
Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated	2,144	0	$ 12,400	$ 438
Financing receivable, modified, weighted average term extension (in years)			8 months 19 days	1 year
Interest Rate Reduction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated	0	0	$ 0	$ 0
Financing receivable, interest rate reduction (in percent)			0.00%	0.00%
Combination Payment Delay and Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated	$ 0	$ 0	$ 0	$ 0
Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, interest rate reduction (in percent)				3.30%
Farmland | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated						1,040
Farmland | 30 - 59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated						0
Farmland | 60 - 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated						0
Farmland | Greater Than 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated						0
Farmland | Total Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated						0
Farmland | Principal Forgiveness
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated				$ 0
Farmland | Payment Delay
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated				1,040
Farmland | Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated				0
Farmland | Interest Rate Reduction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated				0
Farmland | Combination Payment Delay and Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated				$ 0
Owner-occupied, nonfarm nonresidential properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, interest rate reduction (in percent)		0.10%	0.10%	1.00%
Owner-occupied, nonfarm nonresidential properties | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					696	5,254
Owner-occupied, nonfarm nonresidential properties | 30 - 59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					0	0
Owner-occupied, nonfarm nonresidential properties | 60 - 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					0	0
Owner-occupied, nonfarm nonresidential properties | Greater Than 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					0	0
Owner-occupied, nonfarm nonresidential properties | Total Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					0	0
Owner-occupied, nonfarm nonresidential properties | Principal Forgiveness
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated		$ 0	$ 0	$ 0
Owner-occupied, nonfarm nonresidential properties | Payment Delay
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated		696	696	5,254
Owner-occupied, nonfarm nonresidential properties | Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated		0	0	0
Owner-occupied, nonfarm nonresidential properties | Interest Rate Reduction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated		0	0	0
Owner-occupied, nonfarm nonresidential properties | Combination Payment Delay and Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated		$ 0	$ 0	$ 0
Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, interest rate reduction (in percent)			0.90%	0.10%
Commercial and Industrial | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					6,908	465
Commercial and Industrial | 30 - 59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					0	0
Commercial and Industrial | 60 - 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					0	0
Commercial and Industrial | Greater Than 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					0	0
Commercial and Industrial | Total Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					0	0
Commercial and Industrial | Principal Forgiveness
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated			$ 0	$ 0
Financing receivable excluding accrued interest modified increase decrease from modification			0	0
Commercial and Industrial | Payment Delay
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated			6,767	27
Commercial and Industrial | Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated			$ 142	$ 438
Financing receivable, modified, weighted average term extension (in years)			1 year	1 year
Commercial and Industrial | Interest Rate Reduction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated			$ 0	$ 0
Financing receivable, interest rate reduction (in percent)			0.00%	0.00%
Commercial and Industrial | Combination Payment Delay and Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated			$ 0	$ 0
Other construction loans and all land development and other land loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, interest rate reduction (in percent)			2.60%
Other construction loans and all land development and other land loans | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					10,276
Other construction loans and all land development and other land loans | 30 - 59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					0
Other construction loans and all land development and other land loans | 60 - 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					0
Other construction loans and all land development and other land loans | Greater Than 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					0
Other construction loans and all land development and other land loans | Total Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					0
Other construction loans and all land development and other land loans | Principal Forgiveness
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated			$ 0
Financing receivable excluding accrued interest modified increase decrease from modification			0
Other construction loans and all land development and other land loans | Payment Delay
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated			0
Other construction loans and all land development and other land loans | Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated			$ 10,114
Financing receivable, modified, weighted average term extension (in years)			9 months
Other construction loans and all land development and other land loans | Interest Rate Reduction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated			$ 0
Financing receivable, interest rate reduction (in percent)			0.00%
Other construction loans and all land development and other land loans | Combination Payment Delay and Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated			$ 0
Non-owner occupied, nonfarm nonresidential properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, interest rate reduction (in percent)	0.10%	0.50%	0.40%	0.50%
Non-owner occupied, nonfarm nonresidential properties | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					3,064	5,443
Non-owner occupied, nonfarm nonresidential properties | 30 - 59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					1,962	0
Non-owner occupied, nonfarm nonresidential properties | 60 - 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					0	0
Non-owner occupied, nonfarm nonresidential properties | Greater Than 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					0	0
Non-owner occupied, nonfarm nonresidential properties | Total Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					1,962	$ 0
Non-owner occupied, nonfarm nonresidential properties | Principal Forgiveness
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated	$ 0	$ 0	$ 0	$ 0
Financing receivable excluding accrued interest modified increase decrease from modification			0
Non-owner occupied, nonfarm nonresidential properties | Payment Delay
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated	0	5,443	3,087	5,443
Non-owner occupied, nonfarm nonresidential properties | Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated	1,962	0	$ 1,962	0
Financing receivable, modified, weighted average term extension (in years)			6 months
Non-owner occupied, nonfarm nonresidential properties | Interest Rate Reduction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated	0	0	$ 0	0
Financing receivable, interest rate reduction (in percent)			0.00%
Non-owner occupied, nonfarm nonresidential properties | Combination Payment Delay and Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated	$ 0	$ 0	$ 0	$ 0
Multifamily (5 or more) residential properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, interest rate reduction (in percent)	0.00%		0.00%
Multifamily (5 or more) residential properties | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					182
Multifamily (5 or more) residential properties | 30 - 59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					0
Multifamily (5 or more) residential properties | 60 - 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					0
Multifamily (5 or more) residential properties | Greater Than 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					0
Multifamily (5 or more) residential properties | Total Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated					$ 0
Multifamily (5 or more) residential properties | Principal Forgiveness
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated	$ 0		$ 0
Financing receivable excluding accrued interest modified increase decrease from modification			0
Multifamily (5 or more) residential properties | Payment Delay
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated	0		0
Multifamily (5 or more) residential properties | Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated	182		$ 182
Financing receivable, modified, weighted average term extension (in years)			6 months
Multifamily (5 or more) residential properties | Interest Rate Reduction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated	0		$ 0
Financing receivable, interest rate reduction (in percent)			0.00%
Multifamily (5 or more) residential properties | Combination Payment Delay and Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable excluding accrued interest modified accumulated	$ 0		$ 0

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-Topic 310
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