Collateralized Debt Obligations - Schedule of Debt (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Carrying Value	$ 3,511,802	$ 2,978,444
Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate increases, months after issuance	48 months
Minimum
Debt Instrument [Line Items]
Debt instrument, interest rate increases, months after issuance	24 months
Step-Up Interest Rate One
Debt Instrument [Line Items]
Debt instrument, interest rate increase, non-redemption	1.00%
Step-Up Interest Rate Two
Debt Instrument [Line Items]
Debt instrument, interest rate increase, non-redemption	1.50%
Step-Up Interest Rate Three
Debt Instrument [Line Items]
Debt instrument, interest rate increase, non-redemption	3.00%
Collateralized debt obligations \| Secured debt
Debt Instrument [Line Items]
Outstanding Face Amount	$ 3,587,998	3,070,314
Carrying Value	3,511,802	2,978,444
Consolidated SLST \| Collateralized debt obligations \| Secured debt
Debt Instrument [Line Items]
Outstanding Face Amount	1,055,791	867,004
Carrying Value	$ 1,006,919	$ 811,591
Weighted average interest rate (as a percent)	3.30%	3.49%
Consolidated SLST \| Collateralized debt obligations \| Secured debt \| Interest Rate Step-Up
Debt Instrument [Line Items]
Outstanding Face Amount	$ 1,900,000
Residential loan securitizations at fair value \| Collateralized debt obligations \| Secured debt
Debt Instrument [Line Items]
Outstanding Face Amount	2,103,164	$ 1,281,896
Carrying Value	$ 2,075,962	$ 1,253,332
Weighted average interest rate (as a percent)	5.35%	5.72%
Unrealized gain (losses) recognized on CDOs	$ (23,100)	$ (1,500)
Residential loan securitizations at amortized cost, net \| Collateralized debt obligations \| Secured debt
Debt Instrument [Line Items]
Outstanding Face Amount	363,712	850,547
Carrying Value	$ 363,645	$ 842,764
Weighted average interest rate (as a percent)	3.74%	4.35%
Non-Agency RMBS Re-Securitization At Fair Value \| Collateralized debt obligations \| Secured debt
Debt Instrument [Line Items]
Outstanding Face Amount	$ 65,331	$ 70,867
Carrying Value	$ 65,276	$ 70,757
Weighted average interest rate (as a percent)	7.38%	7.38%