v3.20.4

CONSOLIDATED BALANCE SHEETS (Parenthetical) - shares | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Statement of Financial Position [Abstract] |  |
Common units issued (in units) | 10,705,710 | 11,328,297
Common units outstanding (in units) | 10,705,710 | 11,328,297

X
- Definition The number of limited partner units issued. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB Topic 4.F) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187171-122770 + Details
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Balance Type: | na
Period Type: | instant

X
- Definition The number of limited partner units outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB Topic 4.F) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187171-122770 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
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Balance Type: | na
Period Type: | duration