v3.20.1

Valuation (Schedule of Significant Unobservable Inputs, Qualitative Information) (Details) - Level 3 $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2020 USD ($) $ / shares | Dec. 31, 2019 USD ($) $ / shares
Total return swaps | Measurement Input, Discount Rate | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Derivative asset, measurement input | 0.109 | 0.085
Derivative Liability, Measurement Input | 0.159 | 0.277
Total return swaps | Measurement Input, Discount Rate | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Derivative asset, measurement input | 0.109 | 0.277
Derivative Liability, Measurement Input | 0.159 | 0.277
Total return swaps | Measurement Input, Discount Rate | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Derivative asset, measurement input | 0.109 | 0.115
Derivative Liability, Measurement Input | 0.159 | 0.277
Valuation, Market Approach | Non-Agency RMBS |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ 60,935 | $ 38,754
Valuation, Market Approach | Non-Agency RMBS | Measurement Input, Quoted Price | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | $ / shares | 1.75 | 6.68
Valuation, Market Approach | Non-Agency RMBS | Measurement Input, Quoted Price | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | $ / shares | 291.19 | 144.79
Valuation, Market Approach | Non-Agency RMBS | Measurement Input, Quoted Price | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | $ / shares | 99.35 | 86.21
Valuation, Market Approach | CMBS |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ 15,245 | $ 29,630
Valuation, Market Approach | CMBS | Measurement Input, Quoted Price | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | $ / shares | 4.78 | 5.08
Valuation, Market Approach | CMBS | Measurement Input, Quoted Price | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | $ / shares | 59.70 | 80.72
Valuation, Market Approach | CMBS | Measurement Input, Quoted Price | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | $ / shares | 44.50 | 64.73
Valuation, Market Approach | Agency RMBS | Interest only securities |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ 9,347 | $ 3,753
Valuation, Market Approach | Agency RMBS | Interest only securities | Measurement Input, Quoted Price | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | $ / shares | 0.76 | 1.36
Valuation, Market Approach | Agency RMBS | Interest only securities | Measurement Input, Quoted Price | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | $ / shares | 23.12 | 16.61
Valuation, Market Approach | Agency RMBS | Interest only securities | Measurement Input, Quoted Price | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | $ / shares | 9.96 | 5.11
Valuation, Market Approach | CLOs |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ 34,470 | $ 38,220
Valuation, Market Approach | CLOs | Measurement Input, Quoted Price | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | $ / shares | 20.00 | 40.00
Valuation, Market Approach | CLOs | Measurement Input, Quoted Price | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | $ / shares | 310.00 | 96.00
Valuation, Market Approach | CLOs | Measurement Input, Quoted Price | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | $ / shares | 67.98 | 73.98
Valuation, Market Approach | Asset-backed securities, backed by consumer loans |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ 126 | $ 139
Valuation, Market Approach | Asset-backed securities, backed by consumer loans | Measurement Input, Quoted Price | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | $ / shares | 94.80 | 95.47
Valuation, Market Approach | Asset-backed securities, backed by consumer loans | Measurement Input, Quoted Price | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | $ / shares | 95.87 | 96.78
Valuation, Market Approach | Asset-backed securities, backed by consumer loans | Measurement Input, Quoted Price | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | $ / shares | 95.37 | 96.12
Valuation, Market Approach | Corporate loan [Member] |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ 6,114 | $ 6,010
Valuation, Market Approach | Corporate loan [Member] | Measurement Input, Quoted Price | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | $ / shares | 100.00 | 100.00
Valuation, Market Approach | Corporate loan [Member] | Measurement Input, Quoted Price | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | $ / shares | 100.00 | 100.00
Valuation, Market Approach | Corporate loan [Member] | Measurement Input, Quoted Price | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | $ / shares | 100.00 | 100.00
Valuation, Income Approach | Non-Agency RMBS |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ 33,262 | $ 50,827
Valuation, Income Approach | Non-Agency RMBS | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Total outstanding collateral | 100.00% | 100.00%
Valuation, Income Approach | Non-Agency RMBS | Measurement Input, Discount Rate | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.016 | 0.033
Valuation, Income Approach | Non-Agency RMBS | Measurement Input, Discount Rate | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.495 | 0.609
Valuation, Income Approach | Non-Agency RMBS | Measurement Input, Discount Rate | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.132 | 0.100
Valuation, Income Approach | Non-Agency RMBS | Measurement Input, Prepayment Rate | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.006 | 0.008
Valuation, Income Approach | Non-Agency RMBS | Measurement Input, Prepayment Rate | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.745 | 0.720
Valuation, Income Approach | Non-Agency RMBS | Measurement Input, Prepayment Rate | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.491 | 0.493
Valuation, Income Approach | Non-Agency RMBS | Measurement Input, Default Rate | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.000 | 0.000
Valuation, Income Approach | Non-Agency RMBS | Measurement Input, Default Rate | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.222 | 0.227
Valuation, Income Approach | Non-Agency RMBS | Measurement Input, Default Rate | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.063 | 0.066
Valuation, Income Approach | Non-Agency RMBS | Measurement Input, Projected Collateral Recoveries | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.000 | 0.000
Valuation, Income Approach | Non-Agency RMBS | Measurement Input, Projected Collateral Recoveries | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.277 | 0.324
Valuation, Income Approach | Non-Agency RMBS | Measurement Input, Projected Collateral Recoveries | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.088 | 0.069
Valuation, Income Approach | Non-Agency RMBS | Measurement input, Projected Collateral Scheduled Amortization | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.142 | 0.169
Valuation, Income Approach | Non-Agency RMBS | Measurement input, Projected Collateral Scheduled Amortization | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.859 | 0.929
Valuation, Income Approach | Non-Agency RMBS | Measurement input, Projected Collateral Scheduled Amortization | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.358 | 0.372
Valuation, Income Approach | CMBS |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ 5,031 | $ 175
Valuation, Income Approach | CMBS | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Total outstanding collateral | 100.00% | 100.00%
Valuation, Income Approach | CMBS | Measurement Input, Discount Rate | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.102 | 0.100
Valuation, Income Approach | CMBS | Measurement Input, Discount Rate | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.318 | 0.100
Valuation, Income Approach | CMBS | Measurement Input, Discount Rate | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.155 | 0.100
Valuation, Income Approach | CMBS | Measurement Input, Prepayment Rate | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input |  | 1.000
Valuation, Income Approach | CMBS | Measurement Input, Prepayment Rate | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input |  | 1.000
Valuation, Income Approach | CMBS | Measurement Input, Prepayment Rate | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input |  | 1.000
Valuation, Income Approach | CMBS | Measurement Input, Default Rate | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.000 |
Valuation, Income Approach | CMBS | Measurement Input, Default Rate | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.002 |
Valuation, Income Approach | CMBS | Measurement Input, Default Rate | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.002 |
Valuation, Income Approach | CMBS | Measurement Input, Projected Collateral Recoveries | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.000 |
Valuation, Income Approach | CMBS | Measurement Input, Projected Collateral Recoveries | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.018 |
Valuation, Income Approach | CMBS | Measurement Input, Projected Collateral Recoveries | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.017 |
Valuation, Income Approach | CMBS | Measurement input, Projected Collateral Scheduled Amortization | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.980 |
Valuation, Income Approach | CMBS | Measurement input, Projected Collateral Scheduled Amortization | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 1.000 |
Valuation, Income Approach | CMBS | Measurement input, Projected Collateral Scheduled Amortization | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.981 |
Valuation, Income Approach | Agency RMBS | Interest only securities |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ 11,634 | $ 16,151
Fair Value of Agency IOs, negative OAS measurement input | $ 1,000 |
Valuation, Income Approach | Agency RMBS | Interest only securities | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Total outstanding collateral | 100.00% | 100.00%
Valuation, Income Approach | Agency RMBS | Interest only securities | Measurement Input, LIBOR OAS | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.0318 | 0.0093
Valuation, Income Approach | Agency RMBS | Interest only securities | Measurement Input, LIBOR OAS | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.9325 | 0.3527
Valuation, Income Approach | Agency RMBS | Interest only securities | Measurement Input, LIBOR OAS | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.2263 | 0.0701
Valuation, Income Approach | Agency RMBS | Interest only securities | Net LIBOR OAS [Member] | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.2007 |
Valuation, Income Approach | Agency RMBS | Interest only securities | Measurement Input, Prepayment Rate | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.625 | 0.123
Valuation, Income Approach | Agency RMBS | Interest only securities | Measurement Input, Prepayment Rate | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.940 | 1.000
Valuation, Income Approach | Agency RMBS | Interest only securities | Measurement Input, Prepayment Rate | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.773 | 0.723
Valuation, Income Approach | Agency RMBS | Interest only securities | Measurement input, Projected Collateral Scheduled Amortization | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.060 | 0.000
Valuation, Income Approach | Agency RMBS | Interest only securities | Measurement input, Projected Collateral Scheduled Amortization | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.375 | 0.877
Valuation, Income Approach | Agency RMBS | Interest only securities | Measurement input, Projected Collateral Scheduled Amortization | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.227 | 0.277
Valuation, Income Approach | Corporate debt and equity |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ 1,322 | $ 2,507
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 | 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 | 0.100 | 0.100
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 | 0.100 | 0.100
Valuation, Income Approach | Investment in unconsolidated entities |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ 25,961 | $ 30,458
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 | 0.074 | 0.037
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 | 0.203 | 0.148
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 | 0.116 | 0.099
Valuation, Income Approach | CLOs |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ 9,334 | $ 6,759
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] |  |
Securities, measurement input | 0.144 | 0.140
Valuation, Income Approach | CLOs | Measurement Input, Discount Rate | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.167 | 0.419
Valuation, Income Approach | CLOs | Measurement Input, Discount Rate | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.150 | 0.262
Valuation, Income Approach | CLOs | Measurement Input, Prepayment Rate | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.635 | 0.485
Valuation, Income Approach | CLOs | Measurement Input, Prepayment Rate | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.635 | 0.846
Valuation, Income Approach | CLOs | Measurement Input, Prepayment Rate | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.635 | 0.725
Valuation, Income Approach | CLOs | Measurement Input, Default Rate | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.248 | 0.117
Valuation, Income Approach | CLOs | Measurement Input, Default Rate | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.248 | 0.364
Valuation, Income Approach | CLOs | Measurement Input, Default Rate | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.248 | 0.199
Valuation, Income Approach | CLOs | Measurement Input, Projected Collateral Recoveries | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.110 | 0.037
Valuation, Income Approach | CLOs | Measurement Input, Projected Collateral Recoveries | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.110 | 0.151
Valuation, Income Approach | CLOs | Measurement Input, Projected Collateral Recoveries | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.110 | 0.076
Valuation, Income Approach | CLOs | Measurement input, Projected Collateral Scheduled Amortization | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.007 |
Valuation, Income Approach | CLOs | Measurement input, Projected Collateral Scheduled Amortization | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.007 |
Valuation, Income Approach | CLOs | Measurement input, Projected Collateral Scheduled Amortization | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.007 |
Valuation, Income Approach | Asset-backed securities, backed by consumer loans |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ 54,501 | $ 48,471
Valuation, Income Approach | 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 | Asset-backed securities, backed by consumer loans | Measurement Input, Discount Rate | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.140 | 0.120
Valuation, Income Approach | Asset-backed securities, backed by consumer loans | Measurement Input, Discount Rate | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.199 | 0.202
Valuation, Income Approach | Asset-backed securities, backed by consumer loans | Measurement Input, Discount Rate | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.140 | 0.121
Valuation, Income Approach | Asset-backed securities, backed by consumer loans | Measurement Input, Prepayment Rate | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.000 | 0.000
Valuation, Income Approach | Asset-backed securities, backed by consumer loans | Measurement Input, Prepayment Rate | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.099 | 0.112
Valuation, Income Approach | Asset-backed securities, backed by consumer loans | Measurement Input, Prepayment Rate | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.077 | 0.097
Valuation, Income Approach | Asset-backed securities, backed by consumer loans | Measurement Input, Default Rate | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.009 | 0.006
Valuation, Income Approach | Asset-backed securities, backed by consumer loans | Measurement Input, Default Rate | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.202 | 0.180
Valuation, Income Approach | Asset-backed securities, backed by consumer loans | Measurement Input, Default Rate | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.156 | 0.154
Valuation, Income Approach | Asset-backed securities, backed by consumer loans | Measurement input, Projected Collateral Scheduled Amortization | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.703 | 0.713
Valuation, Income Approach | Asset-backed securities, backed by consumer loans | Measurement input, Projected Collateral Scheduled Amortization | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.991 | 0.994
Valuation, Income Approach | Asset-backed securities, backed by consumer loans | Measurement input, Projected Collateral Scheduled Amortization | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.767 | 0.749
Valuation, Income Approach | Consumer loans |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ 194,803 | $ 186,954
Valuation, Income Approach | 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 | Measurement Input, Discount Rate | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.090 | 0.070
Valuation, Income Approach | Consumer loans | Measurement Input, Discount Rate | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.120 | 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 | 0.101 | 0.081
Valuation, Income Approach | Consumer loans | Measurement Input, Prepayment Rate | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.000 | 0.000
Valuation, Income Approach | Consumer loans | Measurement Input, Prepayment Rate | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.415 | 0.442
Valuation, Income Approach | Consumer loans | Measurement Input, Prepayment Rate | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.140 | 0.160
Valuation, Income Approach | Consumer loans | Measurement Input, Default Rate | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.018 | 0.030
Valuation, Income Approach | Consumer loans | Measurement Input, Default Rate | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.866 | 0.845
Valuation, Income Approach | Consumer loans | Measurement Input, Default Rate | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.106 | 0.086
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 | 0.155
Valuation, Income Approach | Consumer loans | Measurement input, Projected Collateral Scheduled Amortization | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input | 0.982 | 0.958
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 | 0.754 | 0.754
Valuation, Income Approach | Corporate loan [Member] |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value |  | $ 12,500
Valuation, Income Approach | Corporate loan [Member] | Measurement Input, Discount Rate | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input |  | 0.150
Valuation, Income Approach | Corporate loan [Member] | Measurement Input, Discount Rate | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input |  | 0.180
Valuation, Income Approach | Corporate loan [Member] | Measurement Input, Discount Rate | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Securities, measurement input |  | 0.168
Valuation, Income Approach | Credit default swaps on asset-backed securities |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ 353 | $ 993
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] |  |
Derivative asset, measurement input | 0.343 | 0.354
Valuation, Income Approach | Credit default swaps on asset-backed securities | Measurement Input, Prepayment Rate | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Derivative asset, measurement input | 0.430 | 0.420
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] |  |
Derivative asset, measurement input | 0.408 | 0.373
Valuation, Income Approach | Credit default swaps on asset-backed securities | Measurement Input, Default Rate | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Derivative asset, measurement input | 0.120 | 0.042
Valuation, Income Approach | Credit default swaps on asset-backed securities | Measurement Input, Default Rate | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Derivative asset, measurement input | 0.150 | 0.124
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] |  |
Derivative asset, measurement input | 0.127 | 0.102
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] |  |
Derivative asset, measurement input | 0.089 | 0.100
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] |  |
Derivative asset, measurement input | 0.165 | 0.182
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] |  |
Derivative asset, measurement input | 0.105 | 0.153
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] |  |
Derivative asset, measurement input | 0.356 | 0.362
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] |  |
Derivative asset, measurement input | 0.372 | 0.415
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] |  |
Derivative asset, measurement input | 0.360 | 0.372
Valuation, Income Approach | Total return swaps |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ 37 | $ 620
Fair value | (839) | (436)
Valuation, Income Approach | Other secured borrowings, at fair value |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ (549,668) | $ (594,396)
Valuation, Income Approach | Other secured borrowings, at fair value | Measurement Input, Discount Rate | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Debt instrument, measurement input | 0.021 | 0.029
Valuation, Income Approach | Other secured borrowings, at fair value | Measurement Input, Discount Rate | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Debt instrument, measurement input | 0.025 | 0.040
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 instrument, measurement input | 0.023 | 0.033
Enterprise Value | Investment in unconsolidated entities |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ 39,436 | $ 41,392
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 | 0.9 | 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 | 4.0 | 4.7
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 | 1.7
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 | 0.017 | 0.016
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 | 0.209 | 0.195
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 | 0.079 | 0.062
Performing and/or Re-performing | Valuation, Income Approach | Commercial mortgage loans |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ 292,551 | $ 248,214
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 | 0.070 | 0.077
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 | 0.123 | 0.166
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 | 0.085 | 0.088
Performing and/or Re-performing | Valuation, Income Approach | Residential mortgage loans |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ 347,346 | $ 289,672
Securitized loans [Member] | Valuation, Income Approach | Residential mortgage loans |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ 581,181 | $ 628,415
Securitized loans [Member] | Valuation, Income Approach | Residential mortgage loans | Measurement Input, Discount Rate | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Loans, Measurement Input | 0.037 | 0.032
Securitized loans [Member] | Valuation, Income Approach | Residential mortgage loans | Measurement Input, Discount Rate | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Loans, Measurement Input | 0.041 | 0.043
Securitized loans [Member] | Valuation, Income Approach | Residential mortgage loans | Measurement Input, Discount Rate | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Loans, Measurement Input | 0.039 | 0.036
Securitized loans [Member] | Valuation, Income Approach | Residential mortgage loans |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ 4,000 | $ 1,500
Non-performing | Residential mortgage loans | Measurement Input, Discount Rate | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Loans, Measurement Input | 0.039 | 0.010
Non-performing | Residential mortgage loans | Measurement Input, Discount Rate | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Loans, Measurement Input | 0.246 | 0.266
Non-performing | Residential mortgage loans | Measurement Input, Discount Rate | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Loans, Measurement Input | 0.116 | 0.091
Non-performing | Valuation, Income Approach | Commercial mortgage loans |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ 10,749 | $ 26,545
Non-performing | Valuation, Income Approach | Commercial mortgage loans | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Investment, measurement input, recovery time | 8 months 25 days | 1 month 3 days
Non-performing | Valuation, Income Approach | Commercial mortgage loans | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Investment, measurement input, recovery time | 8 months 25 days | 23 months
Non-performing | Valuation, Income Approach | Commercial mortgage loans | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Investment, measurement input, recovery time | 8 months 25 days | 11 months 12 days
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 | 0.144 | 0.098
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 | 0.144 | 0.147
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 | 0.144 | 0.124
Non-performing | Valuation, Income Approach | Residential mortgage loans |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ 10,845 | $ 14,116
Non-performing | Valuation, Income Approach | Residential mortgage loans | Minimum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Investment, measurement input, recovery time | 0 months | 1 month 3 days
Non-performing | Valuation, Income Approach | Residential mortgage loans | Maximum |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Investment, measurement input, recovery time | 66 months | 165 months 12 days
Non-performing | Valuation, Income Approach | Residential mortgage loans | Weighted Average |  |
Fair Value Measurements Inputs and Valuation Techniques [Line Items] |  |
Investment, measurement input, recovery time | 21 months 3 days | 54 months 18 days

X
- Definition Equity Method Investment, Measurement Input + References No definition available. + Details
Name: | efc_EquityMethodInvestmentMeasurementInput
Namespace Prefix: | efc_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fair value of Agency IOs that have negative OAS measurement unputs at valuation date. + References No definition available. + Details
Name: | efc_FairValueofAgencyIOsnegativeOASmeasurementinput
Namespace Prefix: | efc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Investment Fair Value Measurement Input, Recovery Timeline + References No definition available. + Details
Name: | efc_InvestmentFairValueMeasurementInputRecoveryTimeline
Namespace Prefix: | efc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Value of input used to measure loan. + References No definition available. + Details
Name: | efc_LoansMeasurementInput
Namespace Prefix: | efc_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Equals the underlying current outstanding collateral expressed as 100%. + References No definition available. + Details
Name: | efc_TotalOutstandingCollateral
Namespace Prefix: | efc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- 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 -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Value of input used to measure debt instrument, including, but not limited to, convertible and non-convertible debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_DebtInstrumentMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Value of input used to measure investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Value of input used to measure derivative asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_DerivativeAssetMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Value of input used to measure derivative liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_DerivativeLiabilityMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities. + References No definition available. + Details
Name: | us-gaap_FinancialLiabilitiesFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_TotalReturnSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDiscountRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_WeightedAverageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationTechniqueAxis=us-gaap_MarketApproachValuationTechniqueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputQuotedPriceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CommercialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_InterestOnlyStripMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CollateralizedLoanObligationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_AssetBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=efc_CorporateloanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationTechniqueAxis=us-gaap_IncomeApproachValuationTechniqueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputPrepaymentRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDefaultRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=efc_MeasurementInputprojectedcollateralrecoveriesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=efc_MeasurementinputprojectedcollateralscheduledamortizationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=efc_LIBOROASMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=efc_NetLIBOROASMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=efc_CorporateDebtandEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_EquityMethodInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_ConsumerLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=efc_CreditDefaultSwapsOnAssetBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=efc_OthersecuredborrowingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationTechniqueAxis=efc_EnterpriseValueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=efc_MeasurementInputEquityPricetoBookMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentPerformanceStatusAxis=us-gaap_PerformingFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_ResidentialMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=efc_CommercialMortgageLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentPerformanceStatusAxis=efc_SecuritizedloansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentPerformanceStatusAxis=efc_NonperformingsecuritizedresidentialmortgageloansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentPerformanceStatusAxis=us-gaap_NonperformingFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |