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Financing Agreements - Borrowings Under Repurchase Agreement And Associated Assets Pledged as Collateral (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
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Assets Sold under Agreements to Repurchase [Line Items] |  |
Fair value of securities pledged as collateral under financing agreements | $ 8,550,535 | $ 8,019,405
Mark-to-market financing agreements secured by residential whole loans |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Fair value of securities pledged as collateral under financing agreements | 2,304,684 | 2,629,919
Mark-to-market financing agreements secured by residential whole loans | Fair Value |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Carrying Value | 2,769,019 | 2,391,602
Fair value of securities pledged as collateral under financing agreements | $ 3,559,415 | $ 3,301,288
Weighted average haircut (percent) | 21.15% | 25.27%
Mark-to-market financing agreements secured by securities at fair value | Fair Value |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Carrying Value | $ 159,019 | $ 159,148
Fair value of securities pledged as collateral under financing agreements | $ 250,171 | $ 256,685
Weighted average haircut (percent) | 37.01% | 37.00%
Mark-to-market financing agreements secured by real estate owned |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Fair value of securities pledged as collateral under financing agreements | $ 94,393 | $ 90,445
Mark-to-market financing agreements secured by real estate owned | Fair Value |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Carrying Value | 12,897 | 11,549
Fair value of securities pledged as collateral under financing agreements | $ 35,753 | $ 34,606
Weighted average haircut (percent) | 51.51% | 58.46%
Non-mark-to-market financing secured by residential whole loans | Fair Value |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Carrying Value | $ 989,612 | $ 928,055
Fair value of securities pledged as collateral under financing agreements | $ 1,422,837 | $ 1,420,283
Weighted average haircut (percent) | 26.88% | 29.98%
Non-mark-to-market financing secured by real estate owned | Fair Value |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Carrying Value | $ 11,796 | $ 11,485
Fair value of securities pledged as collateral under financing agreements | $ 31,921 | $ 29,894
Weighted average haircut (percent) | 62.36% | 61.28%

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- Definition The weighted average percentage amount by which the collateral value is contractually required to exceed the loan amount on the Company's repurchase agreements borrowings. + References No definition available. + Details
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- Definition The fair value, as of the date of each statement of financial position presented, of securities which are owned but transferred to serve as collateral for the payment of repurchase agreements, and that are reclassified and separately reported in the statement of financial position because the transferee has the right by contract or custom to sell or re-pledge them. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66007379&loc=d3e113888-111728 + Details
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- Definition Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(m)(1)(i)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(m)(1)(ii)(A)(i)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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