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Collateralized Debt Obligations - Schedule of Mortgages Payable in Consolidated VIEs (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Debt instrument, interest rate increase, non-redemption	3.00%	3.00%
Debt Instrument, Redemption, Period Two | Minimum
Debt Instrument [Line Items]
Debt instrument, interest rate increase, non-redemption	1.00%	1.00%
Debt Instrument, Redemption, Period Two | Weighted Average
Debt Instrument [Line Items]
Debt instrument, interest rate increase, non-redemption	1.50%	1.50%
Debt Instrument, Redemption, Period Two | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate increase, non-redemption	2.00%	2.00%
Debt Instrument, Redemption, Period Three
Debt Instrument [Line Items]
Debt instrument, interest rate increase, non-redemption	1.00%	1.00%
Collateralized Debt Obligations | Secured Debt
Debt Instrument [Line Items]
Outstanding Face Amount	$ 2,652,761	$ 2,652,761	$ 1,944,948
Carrying Value	2,549,500	2,549,500	1,870,517
Collateralized Debt Obligations | Secured Debt | Consolidated SLST
Debt Instrument [Line Items]
Outstanding Face Amount	903,369	903,369	652,933
Carrying Value	$ 844,032	$ 844,032	$ 593,737
Weighted average interest rate	3.63%	3.63%	2.75%
Collateralized Debt Obligations | Secured Debt | Consolidated SLST | Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Carrying Value	$ 381,023	$ 381,023
Collateralized Debt Obligations | Secured Debt | Consolidated SLST | Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
Carrying Value	824,522	824,522
Collateralized Debt Obligations | Secured Debt | Residential loan securitizations
Debt Instrument [Line Items]
Outstanding Face Amount	764,341	764,341
Carrying Value	$ 733,079	$ 733,079
Weighted average interest rate	5.74%	5.74%
Unrealized gains (losses) recognized on CDOs	$ 100	$ 1,500
Collateralized Debt Obligations | Secured Debt | Residential loan securitizations at amortized cost, net
Debt Instrument [Line Items]
Outstanding Face Amount	985,051	985,051	$ 1,292,015
Carrying Value	$ 972,389	$ 972,389	$ 1,276,780
Weighted average interest rate	3.78%	3.78%	4.00%

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