v3.10.0.1

Counterparty Risk (% Of Due from Brokers) (Details) | Jun. 30, 2018
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Morgan Stanley [Member] |
Concentration Risk [Line Items] |
% of Total Due from Brokers | 49.00%
J.P. Morgan Securities LLC [Member] |
Concentration Risk [Line Items] |
% of Total Due from Brokers | 17.00%

X
- Definition Percentage of total amount held by a specific counterparty included in Due from Brokers above a specified concentration risk threshold. + References No definition available. + Details
Name: | efc_PercentageOfDuefromBroker
Namespace Prefix: | efc_
Data Type: | num:percentItemType
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_ConcentrationRiskLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_CounterpartyNameAxis=efc_MorganStanleyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CounterpartyNameAxis=efc_J.P.MorganSecuritiesLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |