v3.19.1

Valuation (Schedule of Significant Unobservable Inputs, Qualitative Information) (Details) - Level 3 | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 USD ($) | Dec. 31, 2017 | Mar. 31, 2019 | Mar. 31, 2019 month | Mar. 31, 2019 $ / shares | Mar. 31, 2019 USD ($)
Corporate equity securities | Non-exchange traded preferred equity investment in loan origination entity |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value | $ 3,000,000 |  |  |  |  |  |
Valuation, Market Approach | Private label mortgage backed securities |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value | $ 36,945,000 |  |  |  |  |  | $ 42,096,000
Valuation, Market Approach | Private label mortgage backed securities | Measurement Input, Quoted Price | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input | 17.42 |  |  |  |  |  |
Securities, measurement input | $ / shares |  |  |  |  |  | 15.72 |
Valuation, Market Approach | Private label mortgage backed securities | Measurement Input, Quoted Price | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input | 178.00 |  |  |  |  |  |
Securities, measurement input | $ / shares |  |  |  |  |  | 184.92 |
Valuation, Market Approach | Private label mortgage backed securities | Measurement Input, Quoted Price | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input | 78.31 |  |  |  |  |  |
Securities, measurement input | $ / shares |  |  |  |  |  | 82.84 |
Valuation, Market Approach | CMBS |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value | $ 576,000 |  |  |  |  |  | 5,137,000
Valuation, Market Approach | CMBS | Measurement Input, Quoted Price | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input | 5.93 |  |  |  |  |  |
Securities, measurement input | $ / shares |  |  |  |  |  | 5.94 |
Valuation, Market Approach | CMBS | Measurement Input, Quoted Price | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input | 6.36 |  |  |  |  |  |
Securities, measurement input | $ / shares |  |  |  |  |  | 70.90 |
Valuation, Market Approach | CMBS | Measurement Input, Quoted Price | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input | 6.14 |  |  |  |  |  |
Securities, measurement input | $ / shares |  |  |  |  |  | 60.88 |
Valuation, Market Approach | Agency interest only RMBS |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value | $ 744,000 |  |  |  |  |  | 705,000
Valuation, Market Approach | Agency interest only RMBS | Measurement Input, Quoted Price | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input | 1.70 |  |  |  |  |  |
Securities, measurement input | $ / shares |  |  |  |  |  | 8.42 |
Valuation, Market Approach | Agency interest only RMBS | Measurement Input, Quoted Price | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input | 9.12 |  |  |  |  |  |
Securities, measurement input | $ / shares |  |  |  |  |  | 14.43 |
Valuation, Market Approach | Agency interest only RMBS | Measurement Input, Quoted Price | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input | 5.64 |  |  |  |  |  |
Securities, measurement input | $ / shares |  |  |  |  |  | 11.96 |
Valuation, Market Approach | Corporate debt and equity |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value |  |  |  |  |  |  | 1,452,000
Valuation, Market Approach | Corporate debt and equity | Measurement Input, Quoted Price | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Securities, measurement input | $ / shares |  |  |  |  |  | 83.50 |
Valuation, Market Approach | Corporate debt and equity | Measurement Input, Quoted Price | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Securities, measurement input | $ / shares |  |  |  |  |  | 83.50 |
Valuation, Market Approach | Corporate debt and equity | Measurement Input, Quoted Price | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Securities, measurement input | $ / shares |  |  |  |  |  | 83.50 |
Valuation, Market Approach | CLOs |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value | $ 5,828,000 |  |  |  |  |  | 13,508,000
Valuation, Market Approach | CLOs | Measurement Input, Quoted Price | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input | 2.64 |  |  |  |  |  |
Securities, measurement input | $ / shares |  |  |  |  |  | 27.30 |
Valuation, Market Approach | CLOs | Measurement Input, Quoted Price | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input | 375.00 |  |  |  |  |  |
Securities, measurement input | $ / shares |  |  |  |  |  | 80.00 |
Valuation, Market Approach | CLOs | Measurement Input, Quoted Price | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input | 167.78 |  |  |  |  |  |
Securities, measurement input | $ / shares |  |  |  |  |  | 72.87 |
Valuation, Market Approach | Corporate debt, non-exchange traded corporate equity, and secured notes [Member] |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value | $ 13,976,000 |  |  |  |  |  |
Valuation, Market Approach | Corporate debt, non-exchange traded corporate equity, and secured notes [Member] | Measurement Input, Quoted Price | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input | 9.69 |  |  |  |  |  |
Valuation, Market Approach | Corporate debt, non-exchange traded corporate equity, and secured notes [Member] | Measurement Input, Quoted Price | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input | 91.00 |  |  |  |  |  |
Valuation, Market Approach | Corporate debt, non-exchange traded corporate equity, and secured notes [Member] | Measurement Input, Quoted Price | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input | 59.18 |  |  |  |  |  |
Valuation, Income Approach | Private label mortgage backed securities |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value | $ 54,346,000 |  |  |  |  |  | 52,574,000
Valuation, Income Approach | Private label mortgage backed securities | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Total outstanding collateral | 100.00% |  |  | 100.00% |  |  |
Valuation, Income Approach | Private label mortgage backed securities | Measurement Input, Discount Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 3.50% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.005 |  |  |
Valuation, Income Approach | Private label mortgage backed securities | Measurement Input, Discount Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 66.10% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.671 |  |  |
Valuation, Income Approach | Private label mortgage backed securities | Measurement Input, Discount Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 10.70% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.095 |  |  |
Valuation, Income Approach | Private label mortgage backed securities | Measurement Input, Prepayment Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 16.00% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.151 |  |  |
Valuation, Income Approach | Private label mortgage backed securities | Measurement Input, Prepayment Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 92.10% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.778 |  |  |
Valuation, Income Approach | Private label mortgage backed securities | Measurement Input, Prepayment Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 50.40% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.466 |  |  |
Valuation, Income Approach | Private label mortgage backed securities | Measurement Input, Default Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 0.00% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.001 |  |  |
Valuation, Income Approach | Private label mortgage backed securities | Measurement Input, Default Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 23.10% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.176 |  |  |
Valuation, Income Approach | Private label mortgage backed securities | Measurement Input, Default Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 8.70% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.088 |  |  |
Valuation, Income Approach | Private label mortgage backed securities | Measurement Input, Projected Collateral Recoveries | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 1.50% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.017 |  |  |
Valuation, Income Approach | Private label mortgage backed securities | Measurement Input, Projected Collateral Recoveries | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 14.60% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.158 |  |  |
Valuation, Income Approach | Private label mortgage backed securities | Measurement Input, Projected Collateral Recoveries | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 7.30% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.082 |  |  |
Valuation, Income Approach | Private label mortgage backed securities | Measurement input, Projected Collateral Scheduled Amortization | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 6.10% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.163 |  |  |
Valuation, Income Approach | Private label mortgage backed securities | Measurement input, Projected Collateral Scheduled Amortization | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 61.80% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.630 |  |  |
Valuation, Income Approach | Private label mortgage backed securities | Measurement input, Projected Collateral Scheduled Amortization | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 33.60% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.364 |  |  |
Valuation, Income Approach | CMBS |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value | $ 227,000 |  |  |  |  |  |
Valuation, Income Approach | CMBS | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Total outstanding collateral | 100.00% |  |  |  |  |  |
Valuation, Income Approach | CMBS | Measurement Input, Discount Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 3.40% |  |  |  |  |  |
Valuation, Income Approach | CMBS | Measurement Input, Discount Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 3.40% |  |  |  |  |  |
Valuation, Income Approach | CMBS | Measurement Input, Discount Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 3.40% |  |  |  |  |  |
Valuation, Income Approach | CMBS | Measurement Input, Default Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 2.00% |  |  |  |  |  |
Valuation, Income Approach | CMBS | Measurement Input, Default Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 2.00% |  |  |  |  |  |
Valuation, Income Approach | CMBS | Measurement Input, Default Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 2.00% |  |  |  |  |  |
Valuation, Income Approach | CMBS | Measurement Input, Projected Collateral Recoveries | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 6.60% |  |  |  |  |  |
Valuation, Income Approach | CMBS | Measurement Input, Projected Collateral Recoveries | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 6.60% |  |  |  |  |  |
Valuation, Income Approach | CMBS | Measurement Input, Projected Collateral Recoveries | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 6.60% |  |  |  |  |  |
Valuation, Income Approach | CMBS | Measurement input, Projected Collateral Scheduled Amortization | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 91.40% |  |  |  |  |  |
Valuation, Income Approach | CMBS | Measurement input, Projected Collateral Scheduled Amortization | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 91.40% |  |  |  |  |  |
Valuation, Income Approach | CMBS | Measurement input, Projected Collateral Scheduled Amortization | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 91.40% |  |  |  |  |  |
Valuation, Income Approach | Corporate Debt and non-exchange traded corporate equity [Member] |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value | $ 4,793,000 |  |  |  |  |  |
Valuation, Income Approach | Corporate Debt and non-exchange traded corporate equity [Member] | Measurement Input, Discount Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 17.50% |  |  |  |  |  |
Valuation, Income Approach | Corporate Debt and non-exchange traded corporate equity [Member] | Measurement Input, Discount Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 17.50% |  |  |  |  |  |
Valuation, Income Approach | Corporate Debt and non-exchange traded corporate equity [Member] | Measurement Input, Discount Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 17.50% |  |  |  |  |  |
Valuation, Income Approach | Corporate debt and equity |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value |  |  |  |  |  |  | 5,750,000
Valuation, Income Approach | Corporate debt and equity | Measurement Input, Discount Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.100 |  |  |
Valuation, Income Approach | Corporate debt and equity | Measurement Input, Discount Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.196 |  |  |
Valuation, Income Approach | Corporate debt and equity | Measurement Input, Discount Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.167 |  |  |
Valuation, Income Approach | Agency interest only RMBS |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value | $ 6,549,000 |  |  |  |  |  | 5,684,000
Valuation, Income Approach | Agency interest only RMBS | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 2.11% | [1] | 3.81% |  |  |  |
Valuation, Income Approach | Agency interest only RMBS | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 35.21% | [1] | 35.21% |  |  |  |
Valuation, Income Approach | Agency interest only RMBS | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 6.77% | [1] | 7.30% |  |  |  |
Total outstanding collateral | 100.00% |  |  | 100.00% |  |  |
Valuation, Income Approach | Agency interest only RMBS | Measurement Input, LIBOR OAS | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.0093 |  |  |
Valuation, Income Approach | Agency interest only RMBS | Measurement Input, LIBOR OAS | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.3527 |  |  |
Valuation, Income Approach | Agency interest only RMBS | Measurement Input, LIBOR OAS | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.0654 |  |  |
Valuation, Income Approach | Agency interest only RMBS | Measurement Input, Prepayment Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 37.70% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.300 |  |  |
Valuation, Income Approach | Agency interest only RMBS | Measurement Input, Prepayment Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 100.00% |  |  |  |  |  |
Securities, measurement input |  |  |  | 1.000 |  |  |
Valuation, Income Approach | Agency interest only RMBS | Measurement Input, Prepayment Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 66.20% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.677 |  |  |
Valuation, Income Approach | Agency interest only RMBS | Measurement input, Projected Collateral Scheduled Amortization | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 0.00% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.000 |  |  |
Valuation, Income Approach | Agency interest only RMBS | Measurement input, Projected Collateral Scheduled Amortization | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 62.30% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.700 |  |  |
Valuation, Income Approach | Agency interest only RMBS | Measurement input, Projected Collateral Scheduled Amortization | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 33.80% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.323 |  |  |
Valuation, Income Approach | Investment in unconsolidated entities |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value |  |  |  |  |  |  | 23,303,000
Valuation, Income Approach | Investment in unconsolidated entities | Measurement Input, Discount Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Equity method investment, measurement input |  |  |  | 0.055 |  |  |
Valuation, Income Approach | Investment in unconsolidated entities | Measurement Input, Discount Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Equity method investment, measurement input |  |  |  | 0.196 |  |  |
Valuation, Income Approach | Investment in unconsolidated entities | Measurement Input, Discount Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Equity method investment, measurement input |  |  |  | 0.102 |  |  |
Valuation, Income Approach | CLOs |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value | $ 9,087,000 |  |  |  |  |  | 7,930,000
Valuation, Income Approach | CLOs | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Total outstanding collateral | 100.00% |  |  | 100.00% |  |  |
Valuation, Income Approach | CLOs | Measurement Input, Discount Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 12.60% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.087 |  |  |
Valuation, Income Approach | CLOs | Measurement Input, Discount Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 103.10% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.152 |  |  |
Valuation, Income Approach | CLOs | Measurement Input, Discount Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 26.70% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.118 |  |  |
Valuation, Income Approach | CLOs | Measurement Input, Prepayment Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 8.10% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.199 |  |  |
Valuation, Income Approach | CLOs | Measurement Input, Prepayment Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 88.40% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.873 |  |  |
Valuation, Income Approach | CLOs | Measurement Input, Prepayment Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 65.20% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.525 |  |  |
Valuation, Income Approach | CLOs | Measurement Input, Default Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 3.70% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.053 |  |  |
Valuation, Income Approach | CLOs | Measurement Input, Default Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 40.80% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.308 |  |  |
Valuation, Income Approach | CLOs | Measurement Input, Default Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 13.50% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.157 |  |  |
Valuation, Income Approach | CLOs | Measurement Input, Projected Collateral Recoveries | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 4.20% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.042 |  |  |
Valuation, Income Approach | CLOs | Measurement Input, Projected Collateral Recoveries | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 38.00% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.137 |  |  |
Valuation, Income Approach | CLOs | Measurement Input, Projected Collateral Recoveries | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 11.90% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.088 |  |  |
Valuation, Income Approach | CLOs | Measurement input, Projected Collateral Scheduled Amortization | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 3.50% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.000 |  |  |
Valuation, Income Approach | CLOs | Measurement input, Projected Collateral Scheduled Amortization | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 13.50% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.652 |  |  |
Valuation, Income Approach | CLOs | Measurement input, Projected Collateral Scheduled Amortization | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 9.40% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.230 |  |  |
Valuation, Income Approach | Consumer loans and asset-backed securities backed by consumer loans |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value | $ 206,761,000 |  |  |  |  |  | 24,108,000
Valuation, Income Approach | Consumer loans and asset-backed securities backed by consumer loans | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Total outstanding collateral | 100.00% |  |  | 100.00% |  |  |
Valuation, Income Approach | Consumer loans and asset-backed securities backed by consumer loans | Measurement Input, Discount Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 7.00% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.120 |  |  |
Valuation, Income Approach | Consumer loans and asset-backed securities backed by consumer loans | Measurement Input, Discount Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 18.30% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.187 |  |  |
Valuation, Income Approach | Consumer loans and asset-backed securities backed by consumer loans | Measurement Input, Discount Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 8.50% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.122 |  |  |
Valuation, Income Approach | Consumer loans and asset-backed securities backed by consumer loans | Measurement Input, Prepayment Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 0.00% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.000 |  |  |
Valuation, Income Approach | Consumer loans and asset-backed securities backed by consumer loans | Measurement Input, Prepayment Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 45.90% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.110 |  |  |
Valuation, Income Approach | Consumer loans and asset-backed securities backed by consumer loans | Measurement Input, Prepayment Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 33.50% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.094 |  |  |
Valuation, Income Approach | Consumer loans and asset-backed securities backed by consumer loans | Measurement Input, Default Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 2.60% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.016 |  |  |
Valuation, Income Approach | Consumer loans and asset-backed securities backed by consumer loans | Measurement Input, Default Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 84.80% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.166 |  |  |
Valuation, Income Approach | Consumer loans and asset-backed securities backed by consumer loans | Measurement Input, Default Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 9.10% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.149 |  |  |
Valuation, Income Approach | Consumer loans and asset-backed securities backed by consumer loans | Measurement input, Projected Collateral Scheduled Amortization | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 15.20% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.729 |  |  |
Valuation, Income Approach | Consumer loans and asset-backed securities backed by consumer loans | Measurement input, Projected Collateral Scheduled Amortization | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 96.60% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.984 |  |  |
Valuation, Income Approach | Consumer loans and asset-backed securities backed by consumer loans | Measurement input, Projected Collateral Scheduled Amortization | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 57.40% |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.757 |  |  |
Valuation, Income Approach | Consumer loans |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value |  |  |  |  |  |  | 192,115,000
Valuation, Income Approach | Consumer loans | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Total outstanding collateral |  |  |  | 100.00% |  |  |
Valuation, Income Approach | Consumer loans | Measurement Input, Discount Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.070 |  |  |
Valuation, Income Approach | Consumer loans | Measurement Input, Discount Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.100 |  |  |
Valuation, Income Approach | Consumer loans | Measurement Input, Discount Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.080 |  |  |
Valuation, Income Approach | Consumer loans | Measurement Input, Prepayment Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.000 |  |  |
Valuation, Income Approach | Consumer loans | Measurement Input, Prepayment Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.554 |  |  |
Valuation, Income Approach | Consumer loans | Measurement Input, Prepayment Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.415 |  |  |
Valuation, Income Approach | Consumer loans | Measurement Input, Default Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.040 |  |  |
Valuation, Income Approach | Consumer loans | Measurement Input, Default Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.866 |  |  |
Valuation, Income Approach | Consumer loans | Measurement Input, Default Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.080 |  |  |
Valuation, Income Approach | Consumer loans | Measurement input, Projected Collateral Scheduled Amortization | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.134 |  |  |
Valuation, Income Approach | Consumer loans | Measurement input, Projected Collateral Scheduled Amortization | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.857 |  |  |
Valuation, Income Approach | Consumer loans | Measurement input, Projected Collateral Scheduled Amortization | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Securities, measurement input |  |  |  | 0.505 |  |  |
Valuation, Income Approach | Performing commercial mortgage loans |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value | $ 163,876,000 |  |  |  |  |  |
Valuation, Income Approach | Performing commercial mortgage loans | Measurement Input, Discount Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 8.00% |  |  |  |  |  |
Valuation, Income Approach | Performing commercial mortgage loans | Measurement Input, Discount Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 22.50% |  |  |  |  |  |
Valuation, Income Approach | Performing commercial mortgage loans | Measurement Input, Discount Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 9.60% |  |  |  |  |  |
Valuation, Income Approach | Non-performing commercial mortgage loans and commercial real estate owned |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value | $ 80,513,000 |  |  |  |  |  |
Valuation, Income Approach | Non-performing commercial mortgage loans and commercial real estate owned | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, recovery time | 3 months |  | 4 months |  |  |  |
Valuation, Income Approach | Non-performing commercial mortgage loans and commercial real estate owned | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, recovery time | 16 months |  | 17 months |  |  |  |
Valuation, Income Approach | Non-performing commercial mortgage loans and commercial real estate owned | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, recovery time | 7 months 27 days |  | 9 months 15 days |  |  |  |
Valuation, Income Approach | Non-performing commercial mortgage loans and commercial real estate owned | Measurement Input, Discount Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 9.60% |  |  |  |  |  |
Valuation, Income Approach | Non-performing commercial mortgage loans and commercial real estate owned | Measurement Input, Discount Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 27.40% |  |  |  |  |  |
Valuation, Income Approach | Non-performing commercial mortgage loans and commercial real estate owned | Measurement Input, Discount Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 13.20% |  |  |  |  |  |
Valuation, Income Approach | Performing residential mortgage loans |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value | $ 171,367,000 |  |  |  |  |  |
Valuation, Income Approach | Performing residential mortgage loans | Measurement Input, Discount Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 2.70% |  |  |  |  |  |
Valuation, Income Approach | Performing residential mortgage loans | Measurement Input, Discount Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 12.90% |  |  |  |  |  |
Valuation, Income Approach | Performing residential mortgage loans | Measurement Input, Discount Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 6.00% |  |  |  |  |  |
Valuation, Income Approach | Securitized residential mortgage loans |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value | $ 314,202,000 |  |  |  |  |  | 296,366,000
Valuation, Income Approach | Securitized residential mortgage loans | Measurement Input, Discount Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 4.30% |  |  |  |  |  |
Loans, measurement input |  |  |  | 0.044 |  |  |
Valuation, Income Approach | Securitized residential mortgage loans | Measurement Input, Discount Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 4.60% |  |  |  |  |  |
Loans, measurement input |  |  |  | 0.046 |  |  |
Valuation, Income Approach | Securitized residential mortgage loans | Measurement Input, Discount Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 4.60% |  |  |  |  |  |
Loans, measurement input |  |  |  | 0.045 |  |  |
Valuation, Income Approach | Non-performing residential mortgage loans and residential real estate owned |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value | $ 12,557,000 |  |  |  |  |  |
Valuation, Income Approach | Non-performing residential mortgage loans and residential real estate owned | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, recovery time | 1 month 27 days | [2] | 1 month 27 days |  |  |  |
Valuation, Income Approach | Non-performing residential mortgage loans and residential real estate owned | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, recovery time | 42 months 6 days | [2] | 40 months 15 days |  |  |  |
Valuation, Income Approach | Non-performing residential mortgage loans and residential real estate owned | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, recovery time | 27 months 24 days | [2] | 25 months 18 days |  |  |  |
Valuation, Income Approach | Non-performing residential mortgage loans and residential real estate owned | Measurement Input, Discount Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 4.30% |  |  |  |  |  |
Valuation, Income Approach | Non-performing residential mortgage loans and residential real estate owned | Measurement Input, Discount Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 25.10% |  |  |  |  |  |
Valuation, Income Approach | Non-performing residential mortgage loans and residential real estate owned | Measurement Input, Discount Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 11.30% |  |  |  |  |  |
Valuation, Income Approach | Credit default swaps on asset-backed securities |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value | $ 1,472,000 |  |  |  |  |  | 1,233,000
Valuation, Income Approach | Credit default swaps on asset-backed securities | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Total outstanding collateral | 100.00% |  |  | 100.00% |  |  |
Valuation, Income Approach | Credit default swaps on asset-backed securities | Measurement Input, Prepayment Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 33.60% |  |  |  |  |  |
Derivative asset, measurement input |  |  |  | 0.341 |  |  |
Valuation, Income Approach | Credit default swaps on asset-backed securities | Measurement Input, Prepayment Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 42.00% |  |  |  |  |  |
Derivative asset, measurement input |  |  |  | 0.386 |  |  |
Valuation, Income Approach | Credit default swaps on asset-backed securities | Measurement Input, Prepayment Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 36.50% |  |  |  |  |  |
Derivative asset, measurement input |  |  |  | 0.360 |  |  |
Valuation, Income Approach | Credit default swaps on asset-backed securities | Measurement Input, Default Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 11.10% |  |  |  |  |  |
Derivative asset, measurement input |  |  |  | 0.117 |  |  |
Valuation, Income Approach | Credit default swaps on asset-backed securities | Measurement Input, Default Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 15.60% |  |  |  |  |  |
Derivative asset, measurement input |  |  |  | 0.181 |  |  |
Valuation, Income Approach | Credit default swaps on asset-backed securities | Measurement Input, Default Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 12.80% |  |  |  |  |  |
Derivative asset, measurement input |  |  |  | 0.133 |  |  |
Valuation, Income Approach | Credit default swaps on asset-backed securities | Measurement Input, Projected Collateral Recoveries | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 10.30% |  |  |  |  |  |
Derivative asset, measurement input |  |  |  | 0.142 |  |  |
Valuation, Income Approach | Credit default swaps on asset-backed securities | Measurement Input, Projected Collateral Recoveries | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 18.70% |  |  |  |  |  |
Derivative asset, measurement input |  |  |  | 0.175 |  |  |
Valuation, Income Approach | Credit default swaps on asset-backed securities | Measurement Input, Projected Collateral Recoveries | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 15.80% |  |  |  |  |  |
Derivative asset, measurement input |  |  |  | 0.162 |  |  |
Valuation, Income Approach | Credit default swaps on asset-backed securities | Measurement input, Projected Collateral Scheduled Amortization | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 32.00% |  |  |  |  |  |
Derivative asset, measurement input |  |  |  | 0.291 |  |  |
Valuation, Income Approach | Credit default swaps on asset-backed securities | Measurement input, Projected Collateral Scheduled Amortization | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 36.50% |  |  |  |  |  |
Derivative asset, measurement input |  |  |  | 0.365 |  |  |
Valuation, Income Approach | Credit default swaps on asset-backed securities | Measurement input, Projected Collateral Scheduled Amortization | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 34.90% |  |  |  |  |  |
Derivative asset, measurement input |  |  |  | 0.345 |  |  |
Valuation, Income Approach | Investment in unconsolidated entities |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value | $ 5,192,000 |  |  |  |  |  |
Valuation, Income Approach | Investment in unconsolidated entities | Measurement Input, Discount Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 12.90% |  |  |  |  |  |
Valuation, Income Approach | Investment in unconsolidated entities | Measurement Input, Discount Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 16.10% |  |  |  |  |  |
Valuation, Income Approach | Investment in unconsolidated entities | Measurement Input, Discount Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input, percent | 15.40% |  |  |  |  |  |
Valuation, Income Approach | Other secured borrowings, at fair value |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value | $ (297,948,000) |  |  |  |  |  | (282,124,000)
Valuation, Income Approach | Other secured borrowings, at fair value | Measurement Input, Discount Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Debt, measurement input | 3.90% |  |  |  |  |  |
Debt instrument, measurement input |  |  |  | 0.040 |  |  |
Valuation, Income Approach | Other secured borrowings, at fair value | Measurement Input, Discount Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Debt, measurement input | 4.40% |  |  |  |  |  |
Debt instrument, measurement input |  |  |  | 0.041 |  |  |
Valuation, Income Approach | Other secured borrowings, at fair value | Measurement Input, Discount Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Debt, measurement input | 4.30% |  |  |  |  |  |
Debt instrument, measurement input |  |  |  | 0.041 |  |  |
Enterprise Value | Investment in unconsolidated entities |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value |  |  |  |  |  |  | 31,849,000
Enterprise Value | Investment in unconsolidated entities | Measurement Input, Equity Price-to-Book | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Equity method investment, measurement input |  |  |  | 1.0 |  |  |
Enterprise Value | Investment in unconsolidated entities | Measurement Input, Equity Price-to-Book | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Equity method investment, measurement input |  |  |  | 3.1 |  |  |
Enterprise Value | Investment in unconsolidated entities | Measurement Input, Equity Price-to-Book | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Equity method investment, measurement input |  |  |  | 1.4 |  |  |
Enterprise Value | Corporate equity securities | Non-exchange traded common equity investment in mortgage-related entity |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value | $ 6,750,000 |  |  |  |  |  |
Enterprise Value | Corporate equity securities | Non-exchange traded common equity investment in mortgage-related entity | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input | 3.3 | [3] | 2.0 |  |  |  |
Enterprise Value | Corporate equity securities | Non-exchange traded common equity investment in mortgage-related entity | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input | 3.3 | [3] | 2.0 |  |  |  |
Enterprise Value | Corporate equity securities | Non-exchange traded common equity investment in mortgage-related entity | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input | 3.3 | [3] | 2.0 |  |  |  |
Enterprise Value | Corporate equity securities | Non-exchange traded preferred equity investment in mortgage-related entity |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value | $ 27,317,000 |  |  |  |  |  |
Enterprise Value | Corporate equity securities | Non-exchange traded preferred equity investment in mortgage-related entity | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input | 1.1 | [3] | 0.9 |  |  |  |
Enterprise Value | Corporate equity securities | Non-exchange traded preferred equity investment in mortgage-related entity | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input | 1.1 | [3] | 0.9 |  |  |  |
Enterprise Value | Corporate equity securities | Non-exchange traded preferred equity investment in mortgage-related entity | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Investment, measurement input | 1.1 | [3] | 0.9 |  |  |  |
Market Quotes | Investment in unconsolidated entities |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value |  |  |  |  |  |  | 3,000,000
Performing and/or Re-performing | Residential mortgage loans | Measurement Input, Discount Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Loans, measurement input |  |  |  | 0.041 |  |  |
Performing and/or Re-performing | Residential mortgage loans | Measurement Input, Discount Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Loans, measurement input |  |  |  | 0.226 |  |  |
Performing and/or Re-performing | Residential mortgage loans | Measurement Input, Discount Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Loans, measurement input |  |  |  | 0.060 |  |  |
Performing and/or Re-performing | Valuation, Income Approach | Commercial mortgage loans |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value |  |  |  |  |  |  | 198,823,000
Performing and/or Re-performing | Valuation, Income Approach | Commercial mortgage loans | Measurement Input, Discount Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Loans, measurement input |  |  |  | 0.080 |  |  |
Performing and/or Re-performing | Valuation, Income Approach | Commercial mortgage loans | Measurement Input, Discount Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Loans, measurement input |  |  |  | 0.225 |  |  |
Performing and/or Re-performing | Valuation, Income Approach | Commercial mortgage loans | Measurement Input, Discount Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Loans, measurement input |  |  |  | 0.094 |  |  |
Performing and/or Re-performing | Valuation, Income Approach | Residential mortgage loans |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value |  |  |  |  |  |  | 274,572,000
Non-performing | Residential mortgage loans | Measurement Input, Discount Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Loans, measurement input |  |  |  | 0.043 |  |  |
Non-performing | Residential mortgage loans | Measurement Input, Discount Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Loans, measurement input |  |  |  | 0.333 |  |  |
Non-performing | Residential mortgage loans | Measurement Input, Discount Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Loans, measurement input |  |  |  | 0.119 |  |  |
Non-performing | Valuation, Income Approach | Commercial mortgage loans |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value |  |  |  |  |  |  | 40,800,000
Non-performing | Valuation, Income Approach | Commercial mortgage loans | Measurement Input, Discount Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Loans, measurement input |  |  |  | 0.105 | 0.0 |  |
Non-performing | Valuation, Income Approach | Commercial mortgage loans | Measurement Input, Discount Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Loans, measurement input |  |  |  | 0.141 | 5.0 |  |
Non-performing | Valuation, Income Approach | Commercial mortgage loans | Measurement Input, Discount Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Loans, measurement input |  |  |  | 0.128 | 3.0 |  |
Non-performing | Valuation, Income Approach | Residential mortgage loans |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Fair value |  |  |  |  |  |  | $ 12,314,000
Non-performing | Valuation, Income Approach | Residential mortgage loans | Measurement Input, Discount Rate | Minimum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Loans, measurement input | month |  |  |  |  | 13.5 |  |
Non-performing | Valuation, Income Approach | Residential mortgage loans | Measurement Input, Discount Rate | Maximum |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Loans, measurement input | month |  |  |  |  | 62.6 |  |
Non-performing | Valuation, Income Approach | Residential mortgage loans | Measurement Input, Discount Rate | Weighted Average |  |  |  |  |  |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |  |
Loans, measurement input | month |  |  |  |  | 32.3 |  |
[1] | Shown in basis points.
[2] | Excludes certain loans that are re-performing.
[3] | Represent an estimation of where market participants might value an enterprise on a price-to-book basis.

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