Consolidated Statements of Changes in Partners' Capital (Unaudited) - USD ($) $ in Thousands	Total	Capital Subject to Withdrawals Net [Member] Limited Partner [Member]	Partners Capital (Deficit) [Member] General Partner [Member]	Capital Units [Member]
Beginning balance at Dec. 31, 2019		$ 98,770	$ (689)	$ 98,081
Net income	$ 2,755	2,727	28	2,755
Distributions		(1,400)		(1,400)
Withdrawals		(13,494)		(13,494)
Ending balance at Sep. 30, 2020		86,603	(661)	85,942
Beginning balance at Jun. 30, 2020		90,537	(668)	89,869
Net income		693	7	700
Distributions		(457)		(457)
Withdrawals		(4,170)		(4,170)
Ending balance at Sep. 30, 2020		86,603	(661)	85,942
Beginning balance at Dec. 31, 2020	78,353	82,991	(655)	82,336
Net income	2,167	2,146	21	2,167
Distributions		(1,156)		(1,156)
Withdrawals		(11,246)		(11,246)
Ending balance at Sep. 30, 2021	68,579	72,735	(634)	72,101
Beginning balance at Jun. 30, 2021		76,087	(641)	75,446
Net income		734	7	741
Distributions		(383)		(383)
Withdrawals		(3,703)		(3,703)
Ending balance at Sep. 30, 2021	$ 68,579	$ 72,735	$ (634)	$ 72,101