SECURED FINANCINGS - Schedule of Secured Financing Agreements (Details) - Line of Credit - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Outstanding Face	$ 512,944	$ 207,084
Carrying Value / Fair Value	512,944	207,084
Collateralized Debt Obligations
Debt Instrument [Line Items]
UPB	658,071	261,049
Fair Value	664,789	264,214
RTL-C Repurchase Agreement
Debt Instrument [Line Items]
Outstanding Face	160,723	135,182
Carrying Value / Fair Value	$ 160,723	$ 135,182
Rate	2.30%	2.30%
Weighted Average Rate	5.90%	6.10%
RTL-C Repurchase Agreement \| Collateralized Debt Obligations
Debt Instrument [Line Items]
UPB	$ 211,173	$ 175,990
Fair Value	$ 212,114	$ 176,584
Weighted Average Life (Years)	6 months	9 months 18 days
TRS-W Repurchase Agreement
Debt Instrument [Line Items]
Outstanding Face	$ 350,732	$ 71,902
Carrying Value / Fair Value	$ 350,732	$ 71,902
Rate	1.60%	1.60%
Weighted Average Rate	5.30%	5.40%
TRS-W Repurchase Agreement \| Collateralized Debt Obligations
Debt Instrument [Line Items]
UPB	$ 446,898	$ 85,059
Fair Value	$ 451,175	$ 87,630
Weighted Average Life (Years)	4 years 6 months	5 years 3 months 18 days
Margin Finance Facility
Debt Instrument [Line Items]
Outstanding Face	$ 1,489
Carrying Value / Fair Value	$ 1,489
Rate	2.00%
Weighted Average Rate	5.60%
Margin Finance Facility \| Collateralized Debt Obligations
Debt Instrument [Line Items]
Fair Value	$ 1,500