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Financing Agreements - Pledged Collateral (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Debt Instrument [Line Items] |  |
Fair value of securities pledged as collateral under financing agreements | $ 8,550,535 | $ 8,019,405
Accrued interest on assets | 31,200 | 25,700
Non-Mark-to-Market |  |
Debt Instrument [Line Items] |  |
Fair value of securities pledged as collateral under financing agreements | 1,446,361 | 1,426,051
Mark-to-Market |  |
Debt Instrument [Line Items] |  |
Fair value of securities pledged as collateral under financing agreements | 3,825,623 | 3,556,273
Securitized |  |
Debt Instrument [Line Items] |  |
Fair value of securities pledged as collateral under financing agreements | 3,278,551 | 3,037,081
Residential whole loans, at carrying value |  |
Debt Instrument [Line Items] |  |
Fair value of securities pledged as collateral under financing agreements | 2,304,684 | 2,629,919
Residential whole loans, at carrying value | Non-Mark-to-Market |  |
Debt Instrument [Line Items] |  |
Fair value of securities pledged as collateral under financing agreements | 580,181 | 693,982
Residential whole loans, at carrying value | Mark-to-Market |  |
Debt Instrument [Line Items] |  |
Fair value of securities pledged as collateral under financing agreements | 380,393 | 459,349
Residential whole loans, at carrying value | Securitized |  |
Debt Instrument [Line Items] |  |
Fair value of securities pledged as collateral under financing agreements | 1,344,110 | 1,476,588
Residential whole loans, at fair value |  |
Debt Instrument [Line Items] |  |
Fair value of securities pledged as collateral under financing agreements | 5,901,287 | 5,042,356
Residential whole loans, at fair value | Non-Mark-to-Market |  |
Debt Instrument [Line Items] |  |
Fair value of securities pledged as collateral under financing agreements | 838,789 | 706,377
Residential whole loans, at fair value | Mark-to-Market |  |
Debt Instrument [Line Items] |  |
Fair value of securities pledged as collateral under financing agreements | 3,164,378 | 2,810,865
Residential whole loans, at fair value | Securitized |  |
Debt Instrument [Line Items] |  |
Fair value of securities pledged as collateral under financing agreements | 1,898,120 | 1,525,114
Securities, at fair value |  |
Debt Instrument [Line Items] |  |
Fair value of securities pledged as collateral under financing agreements | 250,171 | 256,685
Securities, at fair value | Non-Mark-to-Market |  |
Debt Instrument [Line Items] |  |
Fair value of securities pledged as collateral under financing agreements | 0 | 0
Securities, at fair value | Mark-to-Market |  |
Debt Instrument [Line Items] |  |
Fair value of securities pledged as collateral under financing agreements | 250,171 | 256,685
Securities, at fair value | Securitized |  |
Debt Instrument [Line Items] |  |
Fair value of securities pledged as collateral under financing agreements | 0 | 0
Other assets: REO |  |
Debt Instrument [Line Items] |  |
Fair value of securities pledged as collateral under financing agreements | 94,393 | 90,445
Other assets: REO | Non-Mark-to-Market |  |
Debt Instrument [Line Items] |  |
Fair value of securities pledged as collateral under financing agreements | 27,391 | 25,692
Other assets: REO | Mark-to-Market |  |
Debt Instrument [Line Items] |  |
Fair value of securities pledged as collateral under financing agreements | 30,681 | 29,374
Other assets: REO | Securitized |  |
Debt Instrument [Line Items] |  |
Fair value of securities pledged as collateral under financing agreements | $ 36,321 | $ 35,379

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- Definition Sum of the fair values as of the date of the latest financial statement presented of securities pledged as collateral and the amount of interest receivable on the securities pledged as collateral. + 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 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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