XML 80 R64.htm IDEA: XBRL DOCUMENT v2.4.1.9
Counterparty Risk (Cash and Cash Equivalents) (Details)
Dec. 31, 2014
Dec. 31, 2013
BlackRock Liquidity Temp Fund [Member]    
Concentration Risk [Line Items]    
Concentration risk percentage, cash and cash equivalents 88.00%efc_Concentrationriskpercentagecashandcashequivalents
/ us-gaap_CounterpartyNameAxis
= efc_BlackRockLiquidityTempFundMember		 0.00%efc_Concentrationriskpercentagecashandcashequivalents
/ us-gaap_CounterpartyNameAxis
= efc_BlackRockLiquidityTempFundMember
Bank of New York Mellon Corporation [Member]    
Concentration Risk [Line Items]    
Concentration risk percentage, cash and cash equivalents 11.00%efc_Concentrationriskpercentagecashandcashequivalents
/ us-gaap_CounterpartyNameAxis
= efc_BankofNewYorkMellonCorporationMember		 73.00%efc_Concentrationriskpercentagecashandcashequivalents
/ us-gaap_CounterpartyNameAxis
= efc_BankofNewYorkMellonCorporationMember
US Bank [Member]    
Concentration Risk [Line Items]    
Concentration risk percentage, cash and cash equivalents 1.00%efc_Concentrationriskpercentagecashandcashequivalents
/ us-gaap_CounterpartyNameAxis
= efc_USBankMember		 0.00%efc_Concentrationriskpercentagecashandcashequivalents
/ us-gaap_CounterpartyNameAxis
= efc_USBankMember
JP Morgan Prime Money Market Premier Fund [Member]    
Concentration Risk [Line Items]    
Concentration risk percentage, cash and cash equivalents 0.00%efc_Concentrationriskpercentagecashandcashequivalents
/ us-gaap_CounterpartyNameAxis
= efc_JPMorganPrimeMoneyMarketPremierFundMember		 27.00%efc_Concentrationriskpercentagecashandcashequivalents
/ us-gaap_CounterpartyNameAxis
= efc_JPMorganPrimeMoneyMarketPremierFundMember