NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING AND REPORTING POLICIES - Additional Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Cash paid for:
Interest	$ 39,432	$ 50,258
U.S. federal income taxes, net of refunds received	0	0
State income/franchise taxes, net of refunds received	0	(49)
Operating lease liabilities	1,083	1,051
Significant non-cash transactions:
Loans transferred to other real estate	2,251	8,786
Lease right-of-use assets obtained in exchange for lessee operating lease liabilities	$ 120	$ 0

Loans transferred to other real estate.

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Amount, after income tax refund received, of cash paid to federal (national) tax jurisdiction for tax on income.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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Amount, after income tax refund received, of cash paid to state and local tax jurisdictions for tax on income.

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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
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Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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