Partners' Capital (Details) - USD ($)	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Partners' Capital (Details) [Line Items]
Distribution Made to Limited Partner, Cash Distributions Declared	$ 133,937	$ 104,546	$ 194,850	$ 198,178	$ 198,178	$ 198,186	$ 433,333	$ 594,542
SaleProceedsDistributionMadeToMemberOrLimitedPartner								64,513
Partners' Capital Account, Redemptions					48,537
Limited Partner [Member]
Partners' Capital (Details) [Line Items]
Distribution Made to Limited Partner, Cash Distributions Declared	132,597	103,501	192,902	196,197	$ 196,196	196,204	$ 429,000	$ 588,597
Distribution Made to Limited Partner, Distributions Declared, Per Unit (in Dollars per share)							$ 22.83	$ 30.52
Weighted Average Limited Partnership Units Outstanding, Basic (in Shares)							18,791	19,286
DistributionsPerUnitOfNetIncome (in Dollars per share)							$ 8.67	$ 9.52
DistributionsPerUnitOfReturnOfCapital (in Dollars per share)							$ 14.16	$ 21.00
SaleProceedsDistributionMadeToMemberOrLimitedPartner								$ 63,868
SaleProceedsDistributionMadeToLimitedPartnerPerUnit (in Dollars per share)								$ 3.32
Partners' Capital Account, Units, Redeemed (in Shares)					64.66			64.66
Partners' Capital Account, Redemptions					$ 48,051			$ 48,051
General Partner [Member]
Partners' Capital (Details) [Line Items]
Distribution Made to Limited Partner, Cash Distributions Declared	$ 1,340	$ 1,045	$ 1,948	$ 1,981	1,982	$ 1,982	$ 4,333	5,945
SaleProceedsDistributionMadeToMemberOrLimitedPartner								645
Partners' Capital Account, Redemptions					$ 486			$ 486