v3.8.0.1

Financial Highlights (Expense Ratios To Average Equity) (Details)

3 Months Ended

9 Months Ended

Sep. 30, 2017

Sep. 30, 2016

Sep. 30, 2017

Sep. 30, 2016

Investment Company, Financial Highlights [Abstract]

Operating expenses, before interest expense and other investment related expenses

^[1],[2]

(2.76%)

(2.89%)

(2.80%)

(2.88%)

Interest expense and other investment related expenses

^[1],[2]

(6.32%)

(3.69%)

(5.69%)

(3.43%)

Total Expenses

^[1],[2]

(9.08%)

(6.58%)

(8.49%)

(6.31%)

[1]	Average equity is calculated using month end values.
[2]	Includes all items of income and expense on an annualized basis.

X

- Definition

The ratio of interest and other investment related expenses to average total equity (including non-controlling interest).

+ References

No definition available.

+ Details

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Namespace Prefix:	efc_
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Period Type:	duration

X

- Definition

The ratio of operating expenses (before incentive fee, interest expense, and other investment related expenses) to average total equity (inclusive of non-controlling interest).

+ References

No definition available.

+ Details

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Namespace Prefix:	efc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of expense, after incentive allocation, to average net assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 205
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=25866437&loc=d3e10342-115837

+ Details

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X

- References

No definition available.

+ Details

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