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OFF-BALANCE SHEET COMMITMENTS AND CONTINGENCIES - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Capital Contributions in SBICs and CDEs
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Restricted stock and investments	$ 26,700		$ 27,700
Investments in SBICs and other limited partnerships
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Restricted stock and investments	8,000		12,200
Capital Contributions, Low Income Housing Partnerships
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Restricted stock and investments	8,200		6,800
Amortization	282	$ 172
Capital Contributions, Low Income Housing Partnerships \| Other Commitments, Unfunded Commitments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Accrued interest payable and accrued liabilities	225		1,000
Capital Contributions, Limited Partnerships Corporation
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Restricted stock and investments	4,100		4,100
Amortization	0	$ 0
Capital Contributions, Limited Partnerships Corporation \| Other Commitments, Unfunded Commitments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Accrued interest payable and accrued liabilities	$ 2,400		$ 3,200