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Repurchase Agreements - Schedule of Repurchase Agreements Secured by Investment Securities (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Assets Sold under Agreements to Repurchase [Line Items] |  |
Outstanding Repurchase Agreements | $ 4,128,622 | $ 3,516,611
Fair Value of Collateral Pledged | 3,913,268 | 3,841,738
Agency RMBS, Non-Agency RMBS And U.S. Treasury Securities |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Outstanding Repurchase Agreements | 4,128,622 | 3,516,611
Fair Value of Collateral Pledged | 4,337,456 | 3,676,585
Amortized Cost of Collateral Pledged | 4,308,174 | 3,729,642
Agency RMBS, Non-Agency RMBS And U.S. Treasury Securities | Collateral Pledged |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Restricted cash | 300 | 11,800
Agency RMBS |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Outstanding Repurchase Agreements | 4,060,557 | 2,830,925
Fair Value of Collateral Pledged | 4,254,071 | 2,975,400
Amortized Cost of Collateral Pledged | 4,225,254 | 2,995,820
Non-Agency RMBS |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Outstanding Repurchase Agreements | 43,892 | 50,622
Fair Value of Collateral Pledged | 58,768 | 67,352
Amortized Cost of Collateral Pledged | 57,266 | 64,375
Non-Agency RMBS | Consolidated SLST |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Amortized Cost of Collateral Pledged | 17,100 | 20,600
U.S. Treasury securities |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Outstanding Repurchase Agreements | 24,173 | 635,064
Fair Value of Collateral Pledged | 24,617 | 633,833
Amortized Cost of Collateral Pledged | $ 25,654 | $ 669,447

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