v3.26.3
Fair Value of Financial Instruments - Fair Value Hierarchy (Details) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Assets:    
Securities, at fair value [1] $ 3,977,565 $ 3,360,280
Total assets carried at fair value 11,703,831 11,077,287
Liabilities:    
Securitized debt 5,518,943 5,846,744
Total liabilities carried at fair value 5,545,908 5,956,057
Residential whole loans    
Assets:    
Residential whole loans, fair value 7,726,266 7,717,007
Agreements with non-mark-to-market collateral provisions    
Liabilities:    
Liabilities carried at fair value 18,696 48,245
Agreements with mark-to-market collateral provisions    
Liabilities:    
Liabilities carried at fair value 8,269 61,068
Level 1    
Assets:    
Securities, at fair value 0 0
Total assets carried at fair value 0 0
Liabilities:    
Securitized debt 0 0
Total liabilities carried at fair value 0 0
Level 1 | Residential whole loans    
Assets:    
Residential whole loans, fair value 0 0
Level 1 | Agreements with non-mark-to-market collateral provisions    
Liabilities:    
Liabilities carried at fair value 0 0
Level 1 | Agreements with mark-to-market collateral provisions    
Liabilities:    
Liabilities carried at fair value 0 0
Level 2    
Assets:    
Securities, at fair value 3,977,565 3,360,280
Total assets carried at fair value 4,022,303 3,411,302
Liabilities:    
Securitized debt 5,518,943 5,846,744
Total liabilities carried at fair value 5,518,943 5,846,744
Level 2 | Residential whole loans    
Assets:    
Residential whole loans, fair value 44,738 51,022
Level 2 | Agreements with non-mark-to-market collateral provisions    
Liabilities:    
Liabilities carried at fair value 0 0
Level 2 | Agreements with mark-to-market collateral provisions    
Liabilities:    
Liabilities carried at fair value 0 0
Level 3    
Assets:    
Securities, at fair value 0 0
Total assets carried at fair value 7,681,528 7,665,985
Liabilities:    
Securitized debt 0 0
Total liabilities carried at fair value 26,965 109,313
Level 3 | Residential whole loans    
Assets:    
Residential whole loans, fair value 7,681,528 7,665,985
Level 3 | Agreements with non-mark-to-market collateral provisions    
Liabilities:    
Liabilities carried at fair value 18,696 48,245
Level 3 | Agreements with mark-to-market collateral provisions    
Liabilities:    
Liabilities carried at fair value $ 8,269 $ 61,068
[1] See Note 6 for information regarding the Company’s pledged assets.