v3.10.0.1

Financial Highlights (Expense Ratios To Average Equity) (Details) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Investment Company, Financial Highlights [Abstract] |  |  |  |  |
Operating expenses, before interest expense and other investment related expenses | [1],[2] | (3.01%) | (2.83%) | (2.84%) | (2.83%)
Incentive fee | [1],[2] | (0.05%) | (0.00%) | (0.05%) | (0.00%)
Interest expense and other investment related expenses | [1],[2] | (11.23%) | (6.02%) | (10.39%) | (5.37%)
Total Expenses | [1],[2] | (14.29%) | (8.85%) | (13.28%) | (8.20%)
[1] | Average equity is calculated using month end values.
[2] | Ratios are annualized except for the incentive fee which is not annualized.

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_
Data Type: | num:percentItemType
Balance Type: | na
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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Data Type: | num:percentItemType
Balance Type: | na
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X
- References No definition available. + Details
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X
- Definition Percentage of incentive fee expense 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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Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration