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Repurchase Agreements (Maturity Information) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | $ 9,139,821 | $ 7,879,087
Repurchase agreement financings are subject to termination | 2,400,000 |
Agency MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 1,557,675 | 2,384,357
Non-Agency MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 1,121,802 | 1,447,585
RPL/NPL MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 495,091 | 1,084,532
CRT securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 203,569 | 391,586
Residential whole loans, at fair value |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 4,743,094 | 2,020,508
Term Notes Backed by MSR-Related Collateral |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 962,515 | 474,127
Other |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 57,198 | 76,419
Repurchase agreements |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | $ 9,140,944 | $ 7,879,114
Weighted Average Interest Rate | 2.99% | 3.42%
Unamortized debt issuance expense | $ 1,123 | $ 27
Overnight | Agency MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 0 |
Overnight | Non-Agency MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 0 |
Overnight | RPL/NPL MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 0 |
Overnight | CRT securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 0 |
Overnight | Residential whole loans, at fair value |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 0 |
Overnight | Term Notes Backed by MSR-Related Collateral |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 0 |
Overnight | Other |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 0 |
Overnight | Repurchase agreements |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | $ 0 |
Weighted Average Interest Rate | 0.00% |
Within 30 Days | Agency MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | $ 1,557,675 |
Within 30 Days | Non-Agency MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 942,212 |
Within 30 Days | RPL/NPL MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 495,091 |
Within 30 Days | CRT securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 203,569 |
Within 30 Days | Residential whole loans, at fair value |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 486,226 |
Within 30 Days | Term Notes Backed by MSR-Related Collateral |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 772,197 |
Within 30 Days | Other |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 15,150 |
Within 30 Days | Repurchase agreements |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | $ 4,472,120 |
Weighted Average Interest Rate | 2.55% |
Over 30 Days to 3 Months | Agency MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | $ 0 |
Over 30 Days to 3 Months | Non-Agency MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 0 |
Over 30 Days to 3 Months | RPL/NPL MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 0 |
Over 30 Days to 3 Months | CRT securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 0 |
Over 30 Days to 3 Months | Residential whole loans, at fair value |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 2,600,720 |
Over 30 Days to 3 Months | Term Notes Backed by MSR-Related Collateral |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 145,664 |
Over 30 Days to 3 Months | Other |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 0 |
Over 30 Days to 3 Months | Repurchase agreements |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | $ 2,746,384 |
Weighted Average Interest Rate | 3.43% |
Over 3 Months to 12 Months | Agency MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | $ 0 |
Over 3 Months to 12 Months | Non-Agency MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 179,590 |
Over 3 Months to 12 Months | RPL/NPL MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 0 |
Over 3 Months to 12 Months | CRT securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 0 |
Over 3 Months to 12 Months | Residential whole loans, at fair value |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 748,149 |
Over 3 Months to 12 Months | Term Notes Backed by MSR-Related Collateral |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 44,654 |
Over 3 Months to 12 Months | Other |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 42,048 |
Over 3 Months to 12 Months | Repurchase agreements |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | $ 1,014,441 |
Weighted Average Interest Rate | 3.36% |
Over 12 months | Agency MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | $ 0 |
Over 12 months | Non-Agency MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 0 |
Over 12 months | RPL/NPL MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 0 |
Over 12 months | CRT securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 0 |
Over 12 months | Residential whole loans, at fair value |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 907,999 |
Over 12 months | Term Notes Backed by MSR-Related Collateral |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 0 |
Over 12 months | Other |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | 0 |
Over 12 months | Repurchase agreements |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreements | $ 907,999 |
Weighted Average Interest Rate | 3.44% |
Minimum |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreement financings are subject to termination, period | 1 month |
Maximum |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreement financings are subject to termination, period | 6 months |

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- Definition Interest rate on the amount to be repaid to the counterparty to the repurchase agreement when the carrying amount (or market value, if higher than the carrying amount) of securities or other assets sold under the repurchase agreement exceeds 10 percent of total assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(m)(1)(i)(A)(ii)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + 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://fasb.org/us-gaap/role/ref/legacyRef -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 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=49176635&loc=d3e9760-107771 Reference 4: 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=6876686&loc=d3e534808-122878 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(m)(1)(a)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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