Valuation Schedule of Fair Value Measurements (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Financial derivatives-assets, at fair value | $ 6,638 | $ 2,791 |
Financial derivatives–liabilities, at fair value | (1,103) | (6,630) |
Fair Value, Recurring [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Financial derivatives-assets, at fair value | 6,638 | 2,791 |
Total mortgage-backed securities, other investments, and financial derivatives–assets, at fair value | 1,318,308 | 1,084,463 |
Financial derivatives–liabilities, at fair value | (1,103) | (6,630) |
Total U.S. Treasury securities and financial derivatives-liabilities, at fair value | (118,298) | |
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 | 908 | 1,720 |
Financial derivatives–liabilities, at fair value | (350) | (699) |
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 | 5,454 | 1,071 |
Financial derivatives–liabilities, at fair value | (608) | (5,585) |
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 | 276 | |
Financial derivatives–liabilities, at fair value | (145) | (346) |
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 | 130,710 | 83,159 |
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 | 36,347 | 44,763 |
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 | 1,072,904 | 834,881 |
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 | 11,960 | 20,442 |
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 | 37,297 | 67,474 |
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 | 10,289 | 13,049 |
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 | 1,311,361 | 1,081,380 |
Fair Value, Recurring [Member] | Other Investments [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Mortgage-backed securities, at fair value | 309 | 292 |
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 | 309 | 292 |
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 | 11,854 | 17,612 |
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 | (117,195) | |
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 | 276 | 0 |
Total mortgage-backed securities, other investments, and financial derivatives–assets, at fair value | 585 | 292 |
Financial derivatives–liabilities, at fair value | (145) | (346) |
Total U.S. Treasury securities and financial derivatives-liabilities, at fair value | (145) | |
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 | 276 | |
Financial derivatives–liabilities, at fair value | (145) | (346) |
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 | |
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] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Mortgage-backed securities, at fair value | 309 | 292 |
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 | 309 | 292 |
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 2 [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Financial derivatives-assets, at fair value | 6,362 | 2,791 |
Total mortgage-backed securities, other investments, and financial derivatives–assets, at fair value | 1,304,810 | 1,062,679 |
Financial derivatives–liabilities, at fair value | (958) | (6,284) |
Total U.S. Treasury securities and financial derivatives-liabilities, at fair value | (118,153) | |
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 | 908 | 1,720 |
Financial derivatives–liabilities, at fair value | (350) | (699) |
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 | 5,454 | 1,071 |
Financial derivatives–liabilities, at fair value | (608) | (5,585) |
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 | |
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 | 130,710 | 83,159 |
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 | 36,347 | 44,763 |
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 | 1,072,904 | 834,881 |
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 | 11,960 | 20,442 |
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 | 37,297 | 67,474 |
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 | 4,635 | 4,853 |
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 | 1,298,448 | 1,059,888 |
Fair Value, Recurring [Member] | Level 2 [Member] | Other Investments [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 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 | 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 | 4,595 | 4,316 |
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 | (117,195) | |
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 | 12,913 | 21,492 |
Financial derivatives–liabilities, at fair value | 0 | 0 |
Total U.S. Treasury securities and financial derivatives-liabilities, at fair value | 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 | |
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 | 5,654 | 8,196 |
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 | 12,913 | 21,492 |
Fair Value, Recurring [Member] | Level 3 [Member] | Other Investments [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] | 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 | 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 | 7,259 | $ 13,296 |
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 | |