v3.26.1
Collateralized Debt Obligations - Schedule of Mortgages Payable in Consolidated VIEs (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Debt Instrument [Line Items]      
Carrying Value $ 3,468,944   $ 3,511,802
Minimum      
Debt Instrument [Line Items]      
Debt instrument, interest rate increases, months after issuance 24 months    
Maximum      
Debt Instrument [Line Items]      
Debt instrument, interest rate increases, months after issuance 48 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 3.00%    
Collateralized Debt Obligations | Secured Debt      
Debt Instrument [Line Items]      
Outstanding Face Amount $ 3,561,024   3,587,998
Carrying Value 3,468,944   3,511,802
Collateralized Debt Obligations | Secured Debt | Consolidated SLST      
Debt Instrument [Line Items]      
Outstanding Face Amount 1,037,455   1,055,791
Carrying Value $ 983,717   $ 1,006,919
Weighted average interest rate 3.29%   3.30%
Collateralized Debt Obligations | Secured Debt | Consolidated SLST | Interest Rate Step-Up      
Debt Instrument [Line Items]      
Outstanding Face Amount $ 1,900,000    
Collateralized Debt Obligations | Secured Debt | Residential loan securitizations      
Debt Instrument [Line Items]      
Outstanding Face Amount 2,106,560   $ 2,103,164
Carrying Value $ 2,068,484   $ 2,075,962
Weighted average interest rate 5.09%   5.35%
Unrealized gains (losses) recognized on CDOs $ 11,000 $ (4,700)  
Collateralized Debt Obligations | Secured Debt | Residential loan securitizations at amortized cost, net      
Debt Instrument [Line Items]      
Outstanding Face Amount 353,108   $ 363,712
Carrying Value $ 353,041   $ 363,645
Weighted average interest rate 3.75%   3.74%
Collateralized Debt Obligations | Secured Debt | Non-Agency RMBS re-securitization at fair value      
Debt Instrument [Line Items]      
Outstanding Face Amount $ 63,901   $ 65,331
Carrying Value $ 63,702   $ 65,276
Weighted average interest rate 7.38%   7.38%