Members' Equity (Details) - USD ($)	3 Months Ended						9 Months Ended		12 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	Dec. 31, 2019	Dec. 31, 2018
Members' Equity (Details) [Line Items]
Distribution Made to Limited Partner, Cash Distributions Declared	$ 163,281	$ 163,281	$ 164,003	$ 243,285	$ 244,743	$ 244,743	$ 490,565	$ 732,771
SaleProceedsDistributionMadeToMemberOrLimitedPartner							242,424	70,707
Partners' Capital Account, Redemptions					6,922
Limited Partner [Member]
Members' Equity (Details) [Line Items]
Distribution Made to Limited Partner, Cash Distributions Declared	159,999	159,999	160,699	237,400	$ 237,401	237,401	$ 480,697	$ 712,202
Distribution Made to Limited Partner, Distributions Declared, Per Unit (in Dollars per share)							$ 20.52	$ 30.37	$ 10.12	$ 12.66
Weighted Average Limited Partnership Units Outstanding, Basic (in Shares)							23,423	23,452
DistributionsPerUnitOfNetIncome (in Dollars per share)							$ 13.31	$ 15.40
DistributionsPerUnitOfReturnOfCapital (in Dollars per share)							$ 7.21	$ 14.97
SaleProceedsDistributionMadeToMemberOrLimitedPartner							$ 240,000	$ 70,000
SaleProceedsDistributionMadetoLimitedPartnerPerUnit (in Dollars per share)							$ 10.25	$ 2.99
Partners' Capital Account, Units, Redeemed (in Shares)					12.00			12.00
Partners' Capital Account, Redemptions					$ 6,714			$ 6,714
General Partner [Member]
Members' Equity (Details) [Line Items]
Distribution Made to Limited Partner, Cash Distributions Declared	$ 3,282	$ 3,282	$ 3,304	$ 5,885	7,342	$ 7,342	$ 9,868	20,569
SaleProceedsDistributionMadeToMemberOrLimitedPartner							$ 2,424	707
Partners' Capital Account, Redemptions					$ 208			$ 208