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Repurchase Agreements - Schedule of Repurchase Agreements Secured by Investment Securities (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Assets Sold under Agreements to Repurchase [Line Items] |  |
Outstanding Repurchase Agreements | $ 4,602,078 | $ 3,516,611
Fair Value of Collateral Pledged | 4,026,027 | 3,841,738
Agency RMBS, Non-Agency RMBS And U.S. Treasury Securities |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Outstanding Repurchase Agreements | 4,602,078 | 3,516,611
Fair Value of Collateral Pledged | 4,828,095 | 3,676,585
Amortized Cost of Collateral Pledged | 4,788,219 | 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 |  | 11,800
Agency RMBS |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Outstanding Repurchase Agreements | 4,436,198 | 2,830,925
Fair Value of Collateral Pledged | 4,646,208 | 2,975,400
Amortized Cost of Collateral Pledged | 4,605,983 | 2,995,820
Non-Agency RMBS |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Outstanding Repurchase Agreements | 30,222 | 50,622
Fair Value of Collateral Pledged | 43,237 | 67,352
Amortized Cost of Collateral Pledged | 42,598 | 64,375
Non-Agency RMBS | Consolidated SLST |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Amortized Cost of Collateral Pledged | 25,200 | 20,600
U.S. Treasury securities |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Outstanding Repurchase Agreements | 135,658 | 635,064
Fair Value of Collateral Pledged | 138,650 | 633,833
Amortized Cost of Collateral Pledged | $ 139,638 | $ 669,447

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