v3.8.0.1

UNIT-BASED COMPENSATION Table 4 - Performance Units Vested (Details) - Performance Units [Member]	12 Months Ended
	Dec. 31, 2017 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unit-based awards, vested (units)	35,373
Unit-based compensation, gross issuance (units)	53,063
2014 awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unit-based awards, vested (units)	9,613
Unit-based compensation, expected conversion of performance units to common units rate	150.00%
Unit-based compensation, gross issuance (units)	14,420
2015 awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unit-based awards, vested (units)	9,878
Unit-based compensation, expected conversion of performance units to common units rate	150.00%
Unit-based compensation, gross issuance (units)	14,818
2016 awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unit-based awards, vested (units)	15,882
Unit-based compensation, expected conversion of performance units to common units rate	150.00%
Unit-based compensation, gross issuance (units)	23,825

X

- Definition

Expected conversion rate of performance units into common shares under share based compensation arrangements.

+ References

No definition available.

+ Details

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X

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting 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)(2)(iii)(2)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Gross number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP). Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

+ References

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