UNIT BASED COMPENSATION - Phantom Units Pursuant to Associated DERs (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Distribution Equivalent Right
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-classified phantom units	$ 170	$ 164	$ 500	$ 477
Liability-classified Phantom Units	14	13	37	34
Total	184	177	537	511
Share-based compensation, forfeited	2	1	2	8
Phantom share units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-classified phantom units		164	337	489
Share-based compensation, forfeited	$ 2	$ 1	$ 2	$ 8

Total distributions to each class of partners (i.e., general, limited and preferred partners).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
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Changes in the ownership interest during the period of each class of partners. Partners include general, limited and preferred partners.

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Amount of increase (decrease) in partners' capital account for unit-based payment arrangement issued by partnership. Partner includes, but is not limited to, general, limited and preferred partners.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Paragraph 5
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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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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Value of forfeited shares granted under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
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