Repurchase Agreements - Schedule of Repurchase Agreements Secured by Investment Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Assets Sold under Agreements to Repurchase [Line Items]
Outstanding Repurchase Agreements	$ 2,447,851	$ 1,862,063
Carrying Value of Assets Pledged	3,503,191	3,084,303
Agency RMBS And Non-Agency RMBS
Assets Sold under Agreements to Repurchase [Line Items]
Outstanding Repurchase Agreements	2,447,851	1,862,063
Carrying Value of Assets Pledged	2,633,293	2,076,435
Amortized Cost of Collateral Pledged	2,697,936	2,102,412
Agency RMBS
Assets Sold under Agreements to Repurchase [Line Items]
Outstanding Repurchase Agreements	2,346,695	1,771,436
Carrying Value of Assets Pledged	2,458,247	1,894,052
Amortized Cost of Collateral Pledged	2,473,618	1,869,415
Non-Agency RMBS
Assets Sold under Agreements to Repurchase [Line Items]
Outstanding Repurchase Agreements	101,156	90,627
Carrying Value of Assets Pledged	175,046	182,383
Amortized Cost of Collateral Pledged	224,318	232,997
Non-Agency RMBS \| Residential Loan Securitizations
Assets Sold under Agreements to Repurchase [Line Items]
Amortized Cost of Collateral Pledged		42,100
Non-Agency RMBS \| Consolidated SLST
Assets Sold under Agreements to Repurchase [Line Items]
Amortized Cost of Collateral Pledged	$ 140,500	$ 140,300

Assets Sold Under Agreements To Repurchase, Amortized Cost Of Collateral Pledged

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Amount, including accrued interest, to be repaid to counterparty to repurchase agreement when carrying amount or market value if higher, of security or other asset sold under repurchase agreement exceeds 10 percent of total assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481420/860-30-50-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481444/860-30-45-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(m)(1)(i))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(m)(1)(ii)(A)(ii))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

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Amount of investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 948
-SubTopic 310
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29(Column G))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479628/948-310-S99-1

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