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Valuation Schedule of Fair Value Measurements (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Financial derivatives-assets, at fair value | $ 1,732 | $ 4,180
Financial derivatives–liabilities, at fair value | (20,234) | (2,047)
Fair Value, Recurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Financial derivatives-assets, at fair value | 1,732 | 4,180
Total mortgage-backed securities, other investments, and financial derivatives–assets, at fair value | 1,052,608 | 1,405,958
Financial derivatives–liabilities, at fair value | (20,234) | (2,047)
Total U.S. Treasury securities and financial derivatives-liabilities, at fair value | (22,388) | (4,117)
Fair Value, Recurring [Member] | TBA securities [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Financial derivatives-assets, at fair value | 782 | 122
Financial derivatives–liabilities, at fair value | (3,582) | (304)
Fair Value, Recurring [Member] | Interest Rate Swap [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Financial derivatives-assets, at fair value | 619 | 3,624
Financial derivatives–liabilities, at fair value | (12,952) | (1,647)
Fair Value, Recurring [Member] | Futures [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Financial derivatives-assets, at fair value | 331 | 434
Financial derivatives–liabilities, at fair value | (3,700) | (96)
Fair Value, Recurring [Member] | Agency RMBS [Member] | 15-year fixed rate mortgages [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 132,375 | 181,231
Fair Value, Recurring [Member] | Agency RMBS [Member] | 20-year fixed rate mortgages [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 1,187 | 1,385
Fair Value, Recurring [Member] | Agency RMBS [Member] | 30-year fixed rate mortgages [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 765,220 | 1,058,878
Fair Value, Recurring [Member] | Agency RMBS [Member] | Adjustable Rate Mortgages |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 30,233 | 33,255
Fair Value, Recurring [Member] | Agency RMBS [Member] | Reverse mortgages [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 98,357 | 99,934
Fair Value, Recurring [Member] | Agency RMBS [Member] | Interest-Only [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 15,629 | 18,244
Fair Value, Recurring [Member] | Residential Mortgage Backed Securities [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 1,050,521 | 1,401,778
Fair Value, Recurring [Member] | Other Investments [Member] | Preferred Stock [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 355 |
Fair Value, Recurring [Member] | Non-Agency RMBS [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 7,520 | 8,851
Fair Value, Recurring [Member] | US Treasury Securities [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
U.S. Treasury securities sold short, at fair value | (2,154) | (2,070)
Fair Value, Recurring [Member] | Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Financial derivatives-assets, at fair value | 331 | 434
Total mortgage-backed securities, other investments, and financial derivatives–assets, at fair value | 686 | 434
Financial derivatives–liabilities, at fair value | (3,700) | (96)
Total U.S. Treasury securities and financial derivatives-liabilities, at fair value | (3,700) | (96)
Fair Value, Recurring [Member] | Level 1 [Member] | TBA securities [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Financial derivatives-assets, at fair value | 0 | 0
Financial derivatives–liabilities, at fair value | 0 | 0
Fair Value, Recurring [Member] | Level 1 [Member] | Interest Rate Swap [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Financial derivatives-assets, at fair value | 0 | 0
Financial derivatives–liabilities, at fair value | 0 | 0
Fair Value, Recurring [Member] | Level 1 [Member] | Futures [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Financial derivatives-assets, at fair value | 331 | 434
Financial derivatives–liabilities, at fair value | (3,700) | (96)
Fair Value, Recurring [Member] | Level 1 [Member] | Agency RMBS [Member] | 15-year fixed rate mortgages [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 0 | 0
Fair Value, Recurring [Member] | Level 1 [Member] | Agency RMBS [Member] | 20-year fixed rate mortgages [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 0 | 0
Fair Value, Recurring [Member] | Level 1 [Member] | Agency RMBS [Member] | 30-year fixed rate mortgages [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 0 | 0
Fair Value, Recurring [Member] | Level 1 [Member] | Agency RMBS [Member] | Adjustable Rate Mortgages |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 0 | 0
Fair Value, Recurring [Member] | Level 1 [Member] | Agency RMBS [Member] | Reverse mortgages [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 0 | 0
Fair Value, Recurring [Member] | Level 1 [Member] | Agency RMBS [Member] | Interest-Only [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 0 | 0
Fair Value, Recurring [Member] | Level 1 [Member] | Residential Mortgage Backed Securities [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 0 | 0
Fair Value, Recurring [Member] | Level 1 [Member] | Other Investments [Member] | Preferred Stock [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 355 |
Fair Value, Recurring [Member] | Level 1 [Member] | Non-Agency RMBS [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 0 | 0
Fair Value, Recurring [Member] | Level 1 [Member] | US Treasury Securities [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
U.S. Treasury securities sold short, at fair value | 0 | 0
Fair Value, Recurring [Member] | Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Financial derivatives-assets, at fair value | 1,401 | 3,746
Total mortgage-backed securities, other investments, and financial derivatives–assets, at fair value | 1,041,955 | 1,394,612
Financial derivatives–liabilities, at fair value | (16,534) | (1,951)
Total U.S. Treasury securities and financial derivatives-liabilities, at fair value | (18,688) | (4,021)
Fair Value, Recurring [Member] | Level 2 [Member] | TBA securities [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Financial derivatives-assets, at fair value | 782 | 122
Financial derivatives–liabilities, at fair value | (3,582) | (304)
Fair Value, Recurring [Member] | Level 2 [Member] | Interest Rate Swap [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Financial derivatives-assets, at fair value | 619 | 3,624
Financial derivatives–liabilities, at fair value | (12,952) | (1,647)
Fair Value, Recurring [Member] | Level 2 [Member] | Futures [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Financial derivatives-assets, at fair value | 0 | 0
Financial derivatives–liabilities, at fair value | 0 | 0
Fair Value, Recurring [Member] | Level 2 [Member] | Agency RMBS [Member] | 15-year fixed rate mortgages [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 132,375 | 181,231
Fair Value, Recurring [Member] | Level 2 [Member] | Agency RMBS [Member] | 20-year fixed rate mortgages [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 1,187 | 1,385
Fair Value, Recurring [Member] | Level 2 [Member] | Agency RMBS [Member] | 30-year fixed rate mortgages [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 765,220 | 1,058,878
Fair Value, Recurring [Member] | Level 2 [Member] | Agency RMBS [Member] | Adjustable Rate Mortgages |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 30,233 | 33,255
Fair Value, Recurring [Member] | Level 2 [Member] | Agency RMBS [Member] | Reverse mortgages [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 98,357 | 99,934
Fair Value, Recurring [Member] | Level 2 [Member] | Agency RMBS [Member] | Interest-Only [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 8,663 | 10,605
Fair Value, Recurring [Member] | Level 2 [Member] | Residential Mortgage Backed Securities [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 1,040,554 | 1,390,866
Fair Value, Recurring [Member] | Level 2 [Member] | Other Investments [Member] | Preferred Stock [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 0 |
Fair Value, Recurring [Member] | Level 2 [Member] | Non-Agency RMBS [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 4,519 | 5,578
Fair Value, Recurring [Member] | Level 2 [Member] | US Treasury Securities [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
U.S. Treasury securities sold short, at fair value | (2,154) | (2,070)
Fair Value, Recurring [Member] | Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Financial derivatives-assets, at fair value | 0 | 0
Total mortgage-backed securities, other investments, and financial derivatives–assets, at fair value | 9,967 | 10,912
Financial derivatives–liabilities, at fair value | 0 | 0
Total U.S. Treasury securities and financial derivatives-liabilities, at fair value | 0 | 0
Fair Value, Recurring [Member] | Level 3 [Member] | TBA securities [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Financial derivatives-assets, at fair value | 0 | 0
Financial derivatives–liabilities, at fair value | 0 | 0
Fair Value, Recurring [Member] | Level 3 [Member] | Interest Rate Swap [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Financial derivatives-assets, at fair value | 0 | 0
Financial derivatives–liabilities, at fair value | 0 | 0
Fair Value, Recurring [Member] | Level 3 [Member] | Futures [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Financial derivatives-assets, at fair value | 0 | 0
Financial derivatives–liabilities, at fair value | 0 | 0
Fair Value, Recurring [Member] | Level 3 [Member] | Agency RMBS [Member] | 15-year fixed rate mortgages [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 0 | 0
Fair Value, Recurring [Member] | Level 3 [Member] | Agency RMBS [Member] | 20-year fixed rate mortgages [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 0 | 0
Fair Value, Recurring [Member] | Level 3 [Member] | Agency RMBS [Member] | 30-year fixed rate mortgages [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 0 | 0
Fair Value, Recurring [Member] | Level 3 [Member] | Agency RMBS [Member] | Adjustable Rate Mortgages |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 0 | 0
Fair Value, Recurring [Member] | Level 3 [Member] | Agency RMBS [Member] | Reverse mortgages [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 0 | 0
Fair Value, Recurring [Member] | Level 3 [Member] | Agency RMBS [Member] | Interest-Only [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 6,966 | 7,639
Fair Value, Recurring [Member] | Level 3 [Member] | Residential Mortgage Backed Securities [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 9,967 | 10,912
Fair Value, Recurring [Member] | Level 3 [Member] | Other Investments [Member] | Preferred Stock [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 0 |
Fair Value, Recurring [Member] | Level 3 [Member] | Non-Agency RMBS [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed securities, at fair value | 3,001 | 3,273
Fair Value, Recurring [Member] | Level 3 [Member] | US Treasury Securities [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
U.S. Treasury securities sold short, at fair value | $ 0 | $ 0

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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets 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://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611 Reference 3: 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 + Details
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