Note 3 - Partners' Equity (Details Textual) - shares shares in Thousands	Mar. 31, 2017	Mar. 31, 2016
Maximum percentage of units to be repurchased	10.00%
Percentage of adjusted book value of company allocable to the repurchase right per unit	66.00%
Minimum Percentage of Outstanding Units Tendered to Use Prorated Method for Calculating Actual Number of Units Acquired	10.00%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	0	0

Minimum percentage of tendered outstanding limited partnership units required to use the prorated method for calculating the actual number of limited partnership units to be acquired during the repurchase right period pursuant to the Company's annual Repurchase Right.

No definition available.

+ Details

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Namespace Prefix:	eepl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of adjusted book value of the Company allocable to limited partnership units for purposes of calculating the repurchase price pursuant to the Company's annual Repurchase Right.

+ References

No definition available.

+ Details

Name:	eepl_PercentageOfAdjustedBookValueOfCompanyAllocableToUnits
Namespace Prefix:	eepl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Maximum percentage of limited partnership units to be repurchased between May 1 and June 30 each year pursuant to the Company's annual Repurchase Right.

+ References

No definition available.

+ Details

Name:	eepl_PercentageOfMaximumUnitsToBeRepurchased
Namespace Prefix:	eepl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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=96867065&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=96867065&loc=d3e5070-113901

+ Details

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