Balance Sheet (Parentheticals) - Limited Partner [Member] - shares	Sep. 30, 2021	Dec. 31, 2020
Limited Partners, units authorized	24,000	24,000
Limited Partners, units issued	17,947.17	18,791.14
Limited Partners, units outstanding	17,947.17	18,791.14

The number of limited partner units authorized to be issued.

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

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