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Fair Value of Financial Instruments (Level 3 Assets) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Unsettled residential whole loans | $ 163,000 |  | $ 163,000 |
Recurring basis | Level 3 | Residential whole loans |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Balance at beginning of period | 2,003,580 | $ 1,200,981 | 1,216,902 | $ 1,381,583
Purchases and originations | 1,968,079 | 0 | 2,805,939 | 0
Draws | 11,152 | 0 | 11,575 | 0
Changes in fair value recorded in Net gain on residential whole loans measured at fair value through earnings | 20,494 | 58,863 | 58,807 | (13,683)
Repayments | (65,985) | (21,721) | (130,488) | (65,934)
Sales and repurchases | 241 | (929) | 671 | (19,460)
Transfer to REO | (6,978) | (7,530) | (32,823) | (52,842)
Balance at end of period | $ 3,930,583 | $ 1,229,664 | $ 3,930,583 | $ 1,229,664

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- Definition Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Collection Of Principal + References No definition available. + Details
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- Definition Unsettled Residential Whole Loans + References No definition available. + Details
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- Definition Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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