v2.4.1.9

Long-Term Incentive Plan Units (Roll-Forward Of Company's LTIP Units Outstanding) (Details) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward] |  |  |
Exercised | (1,822)efc_LtipUnitsConverted | (1,782)efc_LtipUnitsConverted | (1,250)efc_LtipUnitsConverted
Long-Term Incentive Plan Units [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward] |  |  |
LTIP Units Outstanding | 411,052 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember | 397,096 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember | 390,500 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember
Granted | 20,084 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember | 15,738 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember | 7,846 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember
Exercised | (1,822)efc_LtipUnitsConverted / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember | (1,782)efc_LtipUnitsConverted / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember | (1,250)efc_LtipUnitsConverted / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember
LTIP Units Outstanding | 429,314 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember | 411,052 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember | 397,096 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember
LTIP Units Vested and Outstanding | 404,859 efc_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesVestedOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember | 395,314 efc_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesVestedOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember | 389,250 efc_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesVestedOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember
Manager [Member] | Long-Term Incentive Plan Units [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward] |  |  |
LTIP Units Outstanding | 375,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_ManagerMember | 375,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_ManagerMember | 375,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_ManagerMember
Granted | 0 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_ManagerMember | 0 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_ManagerMember | 0 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_ManagerMember
Exercised | 0 efc_LtipUnitsConverted / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_ManagerMember | 0 efc_LtipUnitsConverted / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_ManagerMember | 0 efc_LtipUnitsConverted / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_ManagerMember
LTIP Units Outstanding | 375,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_ManagerMember | 375,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_ManagerMember | 375,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_ManagerMember
LTIP Units Vested and Outstanding | 375,000 efc_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesVestedOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_ManagerMember | 375,000 efc_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesVestedOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_ManagerMember | 375,000 efc_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesVestedOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_ManagerMember
Non-Manager [Member] | Long-Term Incentive Plan Units [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward] |  |  |
LTIP Units Outstanding | 36,052 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_NonManagerMember | 22,096 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_NonManagerMember | 15,500 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_NonManagerMember
Granted | 20,084 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_NonManagerMember | 15,738 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_NonManagerMember | 7,846 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_NonManagerMember
Exercised | (1,822)efc_LtipUnitsConverted / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_NonManagerMember | (1,782)efc_LtipUnitsConverted / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_NonManagerMember | (1,250)efc_LtipUnitsConverted / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_NonManagerMember
LTIP Units Outstanding | 54,314 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_NonManagerMember | 36,052 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_NonManagerMember | 22,096 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_NonManagerMember
LTIP Units Vested and Outstanding | 29,859 efc_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesVestedOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_NonManagerMember | 20,314 efc_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesVestedOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_NonManagerMember | 14,250 efc_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesVestedOutstandingNumber / us-gaap_AwardTypeAxis = efc_LongTermIncentivePlanUnitsMember / efc_TypeOfRecipientAxis = efc_NonManagerMember

X
- Definition The number of LTIP units converted to common shares during the period. + References No definition available. + Details
Name: | efc_LtipUnitsConverted
Namespace Prefix: | efc_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition As of the balance sheet date, the number of shares into which fully vested LTIPs outstanding can be converted into common stock. + References No definition available. + Details
Name: | efc_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesVestedOutstandingNumber
Namespace Prefix: | efc_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Net number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | efc_TypeOfRecipientAxis=efc_ManagerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | efc_TypeOfRecipientAxis=efc_NonManagerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=efc_LongTermIncentivePlanUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |