FAIR VALUE MEASUREMENTS - Narrative (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($)
Schedule of Equity Method Investments [Line Items]
Carrying value of commercial real estate held within unconsolidated VIEs	$ 933,975		$ 830,891
Alternative investment	21,300		23,800
Fair Value, Measurements, Nonrecurring
Schedule of Equity Method Investments [Line Items]
Assets, fair value	81,500		87,600
CLOs
Schedule of Equity Method Investments [Line Items]
Unsecured notes, net of issuance costs	731,400		735,900
Residential Mortgage Loans Held-for-Sale | Fair Value, Measurements, Nonrecurring
Schedule of Equity Method Investments [Line Items]
Assets, fair value	64,200		66,700
Real Estate Owned
Schedule of Equity Method Investments [Line Items]
Assets, fair value adjustment	300	$ 300
Real Estate Owned | Fair Value, Measurements, Nonrecurring
Schedule of Equity Method Investments [Line Items]
Assets, fair value	17,300		20,900
Residential mortgage loans, held-for-sale, at fair value
Schedule of Equity Method Investments [Line Items]
Assets, fair value adjustment	500	$ 200
Secured Notes and Bonds Payable: | CLOs
Schedule of Equity Method Investments [Line Items]
Unsecured notes, net of issuance costs	731,400
Secured Notes and Bonds Payable: | Sculptor
Schedule of Equity Method Investments [Line Items]
Unsecured notes, net of issuance costs	$ 224,000		$ 224,100
Discount Rate
Schedule of Equity Method Investments [Line Items]
Alternative investment, measurement input	0.113		0.118
Variable Interest Entity, Not Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Carrying value of commercial real estate held within unconsolidated VIEs	$ 194,378		$ 194,410
Variable Interest Entity, Not Primary Beneficiary | Credit Risk Transfer LLC
Schedule of Equity Method Investments [Line Items]
Ownership percentage by parent	70.00%
Maturity Greater than 30 Days
Schedule of Equity Method Investments [Line Items]
Days delinquent (in days)	30 days
Weighted Average
Schedule of Equity Method Investments [Line Items]
Broker price discount	22.40%
Weighted Average | Excess MSRs
Schedule of Equity Method Investments [Line Items]
Discount rate	8.40%		8.40%
Minimum
Schedule of Equity Method Investments [Line Items]
Recapture rate, term (in months)	3 months
Broker price discount	10.00%
Minimum | Excess MSRs
Schedule of Equity Method Investments [Line Items]
Discount rate	8.10%		8.10%
Maximum
Schedule of Equity Method Investments [Line Items]
Recapture rate, term (in months)	6 months
Broker price discount	25.00%
Maximum | Excess MSRs
Schedule of Equity Method Investments [Line Items]
Discount rate	9.00%		9.00%
MSRs And MSR Financing Receivables
Schedule of Equity Method Investments [Line Items]
Variable interest rate spread	0.95%		0.95%
Mortgage Servicing Rights | Weighted Average
Schedule of Equity Method Investments [Line Items]
Discount rate	8.90%		8.90%
Mortgage Servicing Rights | Minimum
Schedule of Equity Method Investments [Line Items]
Discount rate	8.80%		8.70%
Mortgage Servicing Rights | Maximum
Schedule of Equity Method Investments [Line Items]
Discount rate	10.30%		10.30%
Residential Transition Loans | Non-performing loans
Schedule of Equity Method Investments [Line Items]
Mortgage loans, held for investment, fair value	$ 54,300		$ 55,200
Collateral	$ 47,400		$ 49,300