v3.19.1

Counterparty Risk (% of Due from Brokers) (Details) | Dec. 31, 2018
--- | ---
Morgan Stanley [Member] |
Concentration Risk [Line Items] |
% of Total Due from Brokers | 37.00%
J.P. Morgan Securities LLC [Member] |
Concentration Risk [Line Items] |
% of Total Due from Brokers | 30.00%

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: | srt_CounterpartyNameAxis=efc_MorganStanleyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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