v3.19.1

Long-Term Incentive Plan Units Long-Term Incentive Plan Units (Unvested LTIP Units) (Details) - Long-Term Incentive Plan Units [Member] - shares | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2019 | Dec. 31, 2018
Schedule of Unvested LTIP Units [Line Items] |  |  |
Number of OP LTIP Units (in units) |  | 37,709 | 39,432
Director [Member] |  |  |
Schedule of Unvested LTIP Units [Line Items] |  |  |
Number of OP LTIP Units (in units) |  | 14,440 | 14,440
Grant Date |  | Sep. 12, 2018 | Sep. 12, 2018
Vesting Date(1) | [1] | Sep. 11, 2019 | Sep. 11, 2019
Vest December 11, 2019 [Member] | Dedicated or partially dedicated personnel [Member] |  |  |
Schedule of Unvested LTIP Units [Line Items] |  |  |
Number of OP LTIP Units (in units) |  | 8,692 | 8,692
Grant Date |  | Dec. 11, 2018 | Dec. 11, 2018
Vesting Date(1) | [1] | Dec. 11, 2019 | Dec. 11, 2019
Vest December 11, 2020 [Member] | Dedicated or partially dedicated personnel [Member] |  |  |
Schedule of Unvested LTIP Units [Line Items] |  |  |
Number of OP LTIP Units (in units) |  | 8,691 | 8,691
Grant Date |  | Dec. 11, 2018 | Dec. 11, 2018
Vesting Date(1) | [1] | Dec. 11, 2020 | Dec. 11, 2020
Vest March 7, 2019 [Member] | Dedicated or partially dedicated personnel [Member] |  |  |
Schedule of Unvested LTIP Units [Line Items] |  |  |
Number of OP LTIP Units (in units) |  |  | 1,723
Grant Date |  |  | Mar. 07, 2018
Vesting Date(1) | [1] |  | Mar. 07, 2019
Vest December 12, 2019 [Member] | Dedicated or partially dedicated personnel [Member] |  |  |
Schedule of Unvested LTIP Units [Line Items] |  |  |
Number of OP LTIP Units (in units) |  | 5,886 | 5,886
Grant Date |  | Dec. 12, 2017 | Dec. 12, 2017
Vesting Date(1) | [1] | Dec. 12, 2019 | Dec. 12, 2019
[1] | Date at which such OP LTIP Units will vest and become non-forfeitable.

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- Definition Date the LTIP unit was granted. + References No definition available. + Details
Name: | efc_LTIPUnitGrantDate
Namespace Prefix: | efc_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

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- Definition Date the LTIP unit vests. + References No definition available. + Details
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Namespace Prefix: | efc_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

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- Definition [Line Items] for Schedule of Unvested LTIP Units [Table] + References No definition available. + Details
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Namespace Prefix: | efc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Unvested + References No definition available. + Details
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Namespace Prefix: | efc_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
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- Details
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Namespace Prefix: |
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- Details
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Namespace Prefix: |
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- Details
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Namespace Prefix: |
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Period Type: |

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- Details
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Namespace Prefix: |
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Period Type: |

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- Details
Name: | us-gaap_VestingAxis=efc_VestMarch72019Member
Namespace Prefix: |
Data Type: | na
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Period Type: |

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- Details
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Namespace Prefix: |
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Period Type: |