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Valuation Schedule of Fair Value Measurements (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financial derivatives-assets, at fair value $ 70,518 $ 68,770
Financial derivatives–liabilities, at fair value (2,481) (3,119)
Fair Value, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financial derivatives-assets, at fair value 70,518 68,770
Total mortgage-backed securities, other investments, and financial derivatives–assets, at fair value 991,742 962,279
Financial derivatives–liabilities, at fair value (2,481) (3,119)
Total U.S. Treasury securities and financial derivatives-liabilities, at fair value (4,438) (3,617)
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 793 3,568
Financial derivatives–liabilities, at fair value (501) (664)
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 69,636 65,202
Financial derivatives–liabilities, at fair value (942) (2,373)
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 89  
Financial derivatives–liabilities, at fair value (657) (82)
Fair Value, Recurring [Member] | Credit Default Swap    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financial derivatives–liabilities, at fair value (381)  
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 31,529 45,324
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 10,021 9,691
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 824,370 781,754
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 7,223 8,663
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 15,885 17,852
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 7,256 9,313
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 920,714 893,301
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 510 208
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 226 208
Fair Value, Recurring [Member] | Other Investments [Member] | US Treasury Securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Mortgage-backed securities, at fair value 284  
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 24,430 20,704
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 (1,957) (498)
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 89 0
Total mortgage-backed securities, other investments, and financial derivatives–assets, at fair value 315 208
Financial derivatives–liabilities, at fair value (657) (82)
Total U.S. Treasury securities and financial derivatives-liabilities, at fair value (657) (82)
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 89  
Financial derivatives–liabilities, at fair value (657) (82)
Fair Value, Recurring [Member] | Level 1 [Member] | Credit Default Swap    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financial derivatives–liabilities, at fair value 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 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 226 208
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 226 208
Fair Value, Recurring [Member] | Level 1 [Member] | Other Investments [Member] | US Treasury Securities [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 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 70,429 68,770
Total mortgage-backed securities, other investments, and financial derivatives–assets, at fair value 972,145 946,152
Financial derivatives–liabilities, at fair value (1,824) (3,037)
Total U.S. Treasury securities and financial derivatives-liabilities, at fair value (3,781) (3,535)
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 793 3,568
Financial derivatives–liabilities, at fair value (501) (664)
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 69,636 65,202
Financial derivatives–liabilities, at fair value (942) (2,373)
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] | Credit Default Swap    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financial derivatives–liabilities, at fair value (381)  
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 31,529 45,324
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 10,021 9,691
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 824,370 781,754
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 7,223 8,663
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 15,885 17,852
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 4,311 5,228
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 901,432 877,382
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 284 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] | Other Investments [Member] | US Treasury Securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Mortgage-backed securities, at fair value 284  
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 8,093 8,870
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 (1,957) (498)
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 19,282 15,919
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  
Financial derivatives–liabilities, at fair value 0 0
Fair Value, Recurring [Member] | Level 3 [Member] | Credit Default Swap    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financial derivatives–liabilities, at fair value 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 2,945 4,085
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 19,282 15,919
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] | Other Investments [Member] | US Treasury Securities [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 16,337 11,834
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