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Residential Mortgage Securities and MSR-Related Assets (Sale of MBS) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2020 | Mar. 31, 2019
Debt Securities, Available-for-sale [Line Items] |  |
Sales Proceeds | $ 1,265,162 | $ 209,462
Gains/(Losses) | (67,995) | 24,609
Agency MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Sales Proceeds | 965,132 | 0
Gains/(Losses) | (22,854) | 0
Non-Agency MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Sales Proceeds | 264,385 | 126,094
Gains/(Losses) | (43,124) | 18,153
CRT securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Sales Proceeds | 35,645 | 83,368
Gains/(Losses) | $ (2,017) | $ 6,456

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- Definition Net gain (loss) resulting from the sales of securitized, pay-through debt securities collateralized by real estate mortgage loans (mortgages). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13(h)) -URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260 + Details
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- Definition Amount of cash inflow from sale of investment in mortgage-backed security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585 + 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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