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Securities, at Fair Value - Interest Income (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items] |  |  |
Interest income | $ 56,690 | $ 90,094 | $ 327,201
Agency MBS |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Coupon interest | 0 | 14,038 | 82,446
Effective yield adjustment | 0 | (5,186) | (26,545)
Interest income | 0 | 8,852 | 55,901
Legacy Non-Agency MBS |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Coupon interest | 14 | 18,263 | 87,024
Effective yield adjustment | 670 | 10,565 | 59,622
Interest income | 684 | 28,828 | 146,646
Accretion income | 670 |  | 14,500
RPL/NPL MBS |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Coupon interest | 373 | 8,376 | 53,086
Effective yield adjustment | 8,136 | 560 | 338
Interest income | 8,509 | 8,936 | 53,424
Accretion income | 8,100 |  | 329
CRT securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Coupon interest | 3,690 | 7,010 | 20,532
Effective yield adjustment | 4,459 | 511 | (1,949)
Interest income | 8,149 | 7,521 | 18,583
MSR related assets |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Coupon interest | 7,462 | 25,970 | 52,644
Effective yield adjustment | 31,886 | 9,987 | 3
Interest income | 39,348 | $ 35,957 | $ 52,647
Accretion income | $ 20,500 |  |

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- Definition Represents the coupon interest income derived from securities backed by a pool of mortgages or trust deeds. + References No definition available. + Details
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- Definition Represents the following effective yield adjustments pertaining to mortgage backed securities. (1) For Agency MBS, this reflects net premium amortization and discount accretion based on actual prepayment activity. (2) For Non-Agency MBS, this is the difference between the net income calculated using the net yield, which is based on management's estimates of future cash flows, less the current coupon yield. + References No definition available. + Details
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- Definition Amount of operating interest income, including amortization and accretion of premiums and discounts, on securitized, pass-through debt securities collateralized by real estate mortgage loans. + 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 210.9-04.2) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 + 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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