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OFF-BALANCE SHEET COMMITMENTS AND CONTINGENCIES - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Capital Contributions in SBICs and CDEs
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Restricted stock and investments	$ 26,900		$ 26,900		$ 27,700
Investments in SBICs and other limited partnerships
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Restricted stock and investments	7,800		7,800		12,200
Capital Contributions, Low Income Housing Partnerships
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Restricted stock and investments	13,500		13,500		6,800
Amortization	989	$ 277	1,300	$ 449
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	7,100		7,100		1,000
Capital Contributions, Limited Partnerships Corporation
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Restricted stock and investments	1,300		1,300		4,100
Amortization	2,700	$ 0	2,700	$ 0
Refundable tax credit income	2,900		2,900
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		$ 2,400		$ 3,200