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Counterparty Risk (Narrative) (Details) (USD $)
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12 Months Ended | |||
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Risks and Uncertainties [Abstract] | ||||
| Collateral Pledged on Reverse Repurchase Agreements Segregated under Securities Exchange Commission Regulation | $ 1,940,000,000us-gaap_CollateralHeldOnReverseRepurchaseAgreementsSegregatedUnderSecuritiesExchangeCommissionRegulation | |||
| Pledged Financial Instruments, Not Separately Reported, Securities For Repurchase Agreements Unsettled | 145,500,000efc_PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForRepurchaseAgreementsUnsettled | 13,300,000efc_PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForRepurchaseAgreementsUnsettled | ||
| Unencumbered investments held in custody | 158,700,000efc_UnencumberedInvestmentsHeldInCustody | |||
| Cash and Cash Equivalents, at Carrying Value | $ 114,140,000us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 183,489,000us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 59,084,000us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 62,737,000us-gaap_CashAndCashEquivalentsAtCarryingValue |
| Concentration risk threshold | 15.00%efc_ConcentrationRiskTreshold |
| X | ||||||||||
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- Definition
Threshold used by the Company to determine disclosure of counterparty concentration risk. No definition available.
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| X | ||||||||||
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- Definition
The carrying amount as of the date of the latest financial statement presented of securities which are owned but transferred to serve as collateral for repurchase agreements which have been sold prior to period end but remain unsettled at the balance sheet date. No definition available.
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| X | ||||||||||
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- Definition
Fair value as of the balance sheet date of securities that are free and clear of any encumbrances such as reverse repurchase agreements. No definition available.
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| X | ||||||||||
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- Definition
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Carrying amount of assets pledged as collateral that are not reclassified and separately reported in the statement of financial position. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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