v2.4.1.9
Contingencies And Commitments Contingencies and Commitments (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Corporate Debt [Member]  
Other Commitments [Line Items]  
Purchase Commitment, Remaining Minimum Amount Committed $ 4.0efc_PurchaseCommitmentMaximumRemainingAmount
/ us-gaap_InvestmentTypeAxis
= efc_CorporateDebtMember
Corporate Debt [Member] | Due on or before December 31, 2015 [Member]  
Other Commitments [Line Items]  
Purchase Commitment, Remaining Minimum Amount Committed 2.0efc_PurchaseCommitmentMaximumRemainingAmount
/ us-gaap_InvestmentTypeAxis
= efc_CorporateDebtMember
/ us-gaap_OtherCommitmentsAxis
= efc_DueonorbeforeDecember312015Member
Corporate Debt [Member] | Due on or before June 12, 2016 [Member]  
Other Commitments [Line Items]  
Purchase Commitment, Remaining Minimum Amount Committed 2.0efc_PurchaseCommitmentMaximumRemainingAmount
/ us-gaap_InvestmentTypeAxis
= efc_CorporateDebtMember
/ us-gaap_OtherCommitmentsAxis
= efc_DueonorbeforeJune122016Member
Loans [Member]  
Other Commitments [Line Items]  
Purchase Commitment, Remaining Minimum Amount Committed 70.0efc_PurchaseCommitmentMaximumRemainingAmount
/ us-gaap_InvestmentTypeAxis
= us-gaap_LoansMember
Amount Purchased Under Commitment $ 11.8efc_AmountPurchasedUnderCommitment
/ us-gaap_InvestmentTypeAxis
= us-gaap_LoansMember