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Valuation Qualtitative Information (Details) - Level 3 [Member] - USD ($)	Jun. 30, 2023	Dec. 31, 2022
Non-Agency RMBS [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value Disclosure	$ 16,337,000	$ 11,834,000
Non-Agency RMBS [Member] | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Yield	6.10%	5.30%
Projected Collateral Prepayments	2.40%	25.10%
Projected Collateral Losses	0.60%	0.00%
Projected Collateral Recoveries	0.00%	1.60%
Non-Agency RMBS [Member] | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Yield	16.70%	21.60%
Projected Collateral Prepayments	63.20%	56.90%
Projected Collateral Losses	9.30%	8.70%
Projected Collateral Recoveries	15.00%	15.40%
Non-Agency RMBS [Member] | Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Yield	9.80%	9.40%
Projected Collateral Prepayments	45.00%	31.10%
Projected Collateral Losses	2.80%	5.70%
Projected Collateral Recoveries	4.50%	11.10%
Non-Agency RMBS [Member] | Discounted Cash Flows [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value Disclosure	$ 6,192,000	$ 1,707,000
Non-Agency RMBS [Member] | Market Quotes [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value Disclosure	$ 10,145,000	$ 10,127,000
Non-Agency RMBS [Member] | Market Quotes [Member] | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-Binding Third-Party Valuation	0.78	0.75
Non-Agency RMBS [Member] | Market Quotes [Member] | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-Binding Third-Party Valuation	96.58	81.42
Non-Agency RMBS [Member] | Market Quotes [Member] | Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-Binding Third-Party Valuation	38.61	34.63
Interest-Only [Member] | Agency RMBS [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value Disclosure	$ 2,945,000	$ 4,085,000
Interest-Only [Member] | Agency RMBS [Member] | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Projected Collateral Prepayments	10.60%	21.20%
Interest-Only [Member] | Agency RMBS [Member] | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Projected Collateral Prepayments	100.00%	76.60%
Interest-Only [Member] | Agency RMBS [Member] | Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Projected Collateral Prepayments	63.30%	51.50%
Interest-Only [Member] | Agency RMBS [Member] | Market Quotes [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value Disclosure	$ 1,212,000	$ 2,362,000
Interest-Only [Member] | Agency RMBS [Member] | Market Quotes [Member] | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-Binding Third-Party Valuation	3.34	13.94
Interest-Only [Member] | Agency RMBS [Member] | Market Quotes [Member] | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-Binding Third-Party Valuation	17.89	18.58
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	6.60	17.62
Interest-Only [Member] | Agency RMBS [Member] | Valuation, Income Approach [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 100,000	$ 3,000
Assets, Fair Value Disclosure	$ 1,733,000	$ 1,723,000
Interest-Only [Member] | Agency RMBS [Member] | Valuation, Income Approach [Member] | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
LIBOR OAS	0.36%	0.92%
Interest-Only [Member] | Agency RMBS [Member] | Valuation, Income Approach [Member] | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
LIBOR OAS	50.76%	50.70%
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	15.79%	6.41%
LIBOR OAS	16.60%	6.44%

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- Definition

The interest rate spread between LIBOR and OAS used as an input to measure fair value, net. Includes positive and negative OAS inputs.

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- Definition

Fair value of assets that had a negative OAS as valuation date.

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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