v2.4.1.9

Counterparty Risk (% Of Total Collateral On Reverse Repurchase Agreements) (Details)	Dec. 31, 2014
Deutsche Bank [Member]
Concentration Risk [Line Items]
% of Total Collateral on Reverse Repurchase Agreements	22.00%efc_PercentageOfTotalCollateralOnReverseRepurchaseAgreements / efc_ReverseRepurchaseAgreementCounterpartyConcentrationAxis = efc_DeutscheBankMember
Royal Bank of Canada [Member]
Concentration Risk [Line Items]
% of Total Collateral on Reverse Repurchase Agreements	17.00%efc_PercentageOfTotalCollateralOnReverseRepurchaseAgreements / efc_ReverseRepurchaseAgreementCounterpartyConcentrationAxis = efc_RoyalBankofCanadaMember

X

- Definition

Percentage of total collateral on reverse repurchase agreements held by a specific counterparty above a specified concentration risk threshold.

+ References

No definition available.

+ Details

Name:	efc_PercentageOfTotalCollateralOnReverseRepurchaseAgreements
Namespace Prefix:	efc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_ConcentrationRiskLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	efc_ReverseRepurchaseAgreementCounterpartyConcentrationAxis=efc_DeutscheBankMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	efc_ReverseRepurchaseAgreementCounterpartyConcentrationAxis=efc_RoyalBankofCanadaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: