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Valuation Qualtitative Information (Details) - Level 3 [Member] - USD ($) | Dec. 31, 2022 | Dec. 31, 2021
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Non-Agency RMBS [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Assets, Fair Value Disclosure | $ 11,834,000 | $ 7,259,000
Non-Agency RMBS [Member] | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield | 5.30% | 2.20%
Projected Collateral Prepayments | 25.10% | 35.70%
Projected Collateral Losses | 0.00% | 0.00%
Projected Collateral Recoveries | 1.60% | 1.10%
Non-Agency RMBS [Member] | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield | 21.60% | 31.80%
Projected Collateral Prepayments | 56.90% | 79.10%
Projected Collateral Losses | 8.70% | 9.20%
Projected Collateral Recoveries | 15.40% | 14.00%
Non-Agency RMBS [Member] | Weighted Average [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield | 9.40% | 6.00%
Projected Collateral Prepayments | 31.10% | 49.20%
Projected Collateral Losses | 5.70% | 5.90%
Projected Collateral Recoveries | 11.10% | 9.30%
Non-Agency RMBS [Member] | Discounted Cash Flows [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Assets, Fair Value Disclosure | $ 1,707,000 | $ 4,616,000
Non-Agency RMBS [Member] | Market Quotes [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Assets, Fair Value Disclosure | $ 10,127,000 | $ 2,643,000
Non-Agency RMBS [Member] | Market Quotes [Member] | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Non-Binding Third-Party Valuation | 0.75 | 52.43
Non-Agency RMBS [Member] | Market Quotes [Member] | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Non-Binding Third-Party Valuation | 81.42 | 92.28
Non-Agency RMBS [Member] | Market Quotes [Member] | Weighted Average [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Non-Binding Third-Party Valuation | 34.63 | 88.18
Interest-Only [Member] | Agency RMBS [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Assets, Fair Value Disclosure | $ 4,085,000 | $ 5,654,000
Interest-Only [Member] | Agency RMBS [Member] | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Projected Collateral Prepayments | 21.20% | 17.30%
Interest-Only [Member] | Agency RMBS [Member] | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Projected Collateral Prepayments | 76.60% | 85.40%
Interest-Only [Member] | Agency RMBS [Member] | Weighted Average [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Projected Collateral Prepayments | 51.50% | 72.40%
Interest-Only [Member] | Agency RMBS [Member] | Market Quotes [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Assets, Fair Value Disclosure | $ 2,362,000 | $ 3,713,000
Interest-Only [Member] | Agency RMBS [Member] | Market Quotes [Member] | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Non-Binding Third-Party Valuation | 13.94 | 6.64
Interest-Only [Member] | Agency RMBS [Member] | Market Quotes [Member] | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Non-Binding Third-Party Valuation | 18.58 | 15.90
Interest-Only [Member] | Agency RMBS [Member] | Market Quotes [Member] | Weighted Average [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Non-Binding Third-Party Valuation | 17.62 | 13.42
Interest-Only [Member] | Agency RMBS [Member] | Valuation, Income Approach [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value | $ 3,000 | $ 15,000
Assets, Fair Value Disclosure | $ 1,723,000 | $ 1,941,000
Interest-Only [Member] | Agency RMBS [Member] | Valuation, Income Approach [Member] | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
LIBOR OAS | 0.92% | 2.24%
Interest-Only [Member] | Agency RMBS [Member] | Valuation, Income Approach [Member] | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
LIBOR OAS | 50.70% | 50.20%
Interest-Only [Member] | Agency RMBS [Member] | Valuation, Income Approach [Member] | Weighted Average [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value Inputs LIBOR OAS Including Negative | 6.41% | 9.50%
LIBOR OAS | 6.44% | 9.53%

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