Per share impact of share issuances/repurchases, or adjustments to non-controlling interests.

No definition available.

Name:	efc_AccretiveDilutiveEffectofShareIssuancesNetofOfferingCostsShareRepurchasesandAdjustmentstoNoncontrollinginterests
Namespace Prefix:	efc_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Per share dividend amount paid to common shareholders.

+ References

No definition available.

+ Details

Name:	efc_DividedsPaidPerCommonShare
Namespace Prefix:	efc_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of Net Income (Loss) attributable to noncontrolling interest based on average common shares outstanding during the period.

+ References

No definition available.

+ Details

Name:	efc_Netincomelossattributabletononcontrollinginterestpershare
Namespace Prefix:	efc_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent based on average common shares outstanding during the period.

+ References

No definition available.

+ Details

Name:	efc_Netincomelossattributabletoparentpershare
Namespace Prefix:	efc_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

The Company's equity per share if all the long term incentive plan units and Operating Partnership units (owned by the non-controlling interest) that have been previously been issued were to be fully vested and exchanged for common shares as of the reporting date.

+ References

No definition available.

+ Details

Name:	efc_ShareholdersEquityPerShareUponConversionOfAllConvertibleUnits
Namespace Prefix:	efc_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Per share impact on dividend amount paid relating to shares issued/repurchased during the period as well as dividends paid to LTIP unit holders.

+ References

No definition available.

+ Details

Name:	efc_WeightedAverageShareImpactOnDividendsPaid
Namespace Prefix:	efc_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_CommonStockSharesOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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

- Definition

Per share or unit amount of realized and unrealized gain (loss) on investment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 205
-Section 50
-Paragraph 7
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=25866437&loc=d3e10246-115837

+ Details

Name:	us-gaap_InvestmentCompanyGainLossOnInvestmentPerShare
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Per share or unit amount of investment income (loss) and realized and unrealized gain (loss) on investment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 205
-Section 50
-Paragraph 7
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=25866437&loc=d3e10246-115837

+ Details

Name:	us-gaap_InvestmentCompanyInvestmentIncomeLossFromOperationsPerShare
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Per share or unit amount, after investment expense, of dividend and interest investment income (loss).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 205
-Section 50
-Paragraph 7
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=25866437&loc=d3e10246-115837

+ Details

Name:	us-gaap_InvestmentCompanyInvestmentIncomeLossPerShare
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Net asset value per share or per unit of investments in certain entities that calculate net asset value per share. Includes, but is not limited to, by unit, membership interest, or other ownership interest. Investment includes, but is not limited to, investment in certain hedge funds, venture capital funds, private equity funds, real estate partnerships or funds. Excludes fair value disclosure.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 35
-Paragraph 54B
-URI http://asc.fasb.org/extlink&oid=117332851&loc=SL7495116-110257

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 205
-Section 50
-Paragraph 7
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=25866437&loc=d3e10246-115837

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 205
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=25866437&loc=d3e10246-115837

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 6A
-URI http://asc.fasb.org/extlink&oid=117815213&loc=SL6742756-110258

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 35
-Paragraph 59
-URI http://asc.fasb.org/extlink&oid=117332851&loc=SL6740821-110257

+ Details

Name:	us-gaap_NetAssetValuePerShare
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

Schedule Of Shareholders Equity Per Share (Details) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2017
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Asset Value Per Share, Beginning Balance	$ 19.15
Net Investment Income	1.42
Net Realized/Unrealized Gains (Losses)	0.23
Results of Operations Attributable to Equity	1.65
Less: Results of Operations Attributable to Non-controlling Interests	(0.11)
Results of Operations Attributable to Shareholders' Equity	1.54
Divideds Paid Per Common Share	(1.64)
Weighted Average Share Impact on Dividends Paid	(0.03)
Accretive (Dilutive) Effect of Share Issuances (Net of Offering Costs), Share Repurchases, and Adjustments to Non-controlling interests	(0.10)
Net Asset Value Per Share, Ending Balance	$ 18.92
Common stock, shares outstanding	29,796,601	43,781,684	38,647,943	31,335,938
Shareholders Equity Per Share Upon Conversion Of All Convertible Units	$ 18.92