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Repurchase Agreements - Repurchase Agreements Secured by Investment Securities (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
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Assets Sold under Agreements to Repurchase [Line Items] |  |
Outstanding Repurchase Agreements | $ 2,057,361 | $ 1,862,063
Value of Assets Pledged | 3,103,105 | 3,084,303
Accrued interest payable | 16,800 | 13,600
Single Family |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Value of Assets Pledged | 141,400 | 146,700
Agency RMBS And Non-Agency RMBS |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Outstanding Repurchase Agreements | 2,057,361 | 1,862,063
Value of Assets Pledged | 2,239,331 | 2,076,435
Amortized Cost of Collateral Pledged | 2,290,661 | 2,102,412
Agency RMBS |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Outstanding Repurchase Agreements | 1,991,485 | 1,771,436
Value of Assets Pledged | 2,097,364 | 1,894,052
Amortized Cost of Collateral Pledged | 2,098,851 | 1,869,415
Non-Agency RMBS |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Outstanding Repurchase Agreements | 65,876 | 90,627
Value of Assets Pledged | 141,967 | 182,383
Amortized Cost of Collateral Pledged | 191,810 | 232,997
Non-Agency RMBS | Residential Loan Securitizations |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Amortized Cost of Collateral Pledged | 6,900 | 42,100
Non-Agency RMBS | Consolidated SLST |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Amortized Cost of Collateral Pledged | $ 135,100 | $ 140,300

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- Definition Repurchase Agreement Counterparty, Accrued Interest Payable + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: 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)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1 + Details
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- Definition Amount to be repaid to the counterparty to the repurchase agreement when the carrying amount (or market value, if higher than the carrying amount) of securities or other assets sold under the repurchase agreement exceeds 10 percent of total assets. + References Reference 1: 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 2: 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 + Details
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- Definition 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//1943274/2147479851/948-310-S99-1 + Details
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