Members' Capital (Details)	6 Months Ended		12 Months Ended
	Dec. 31, 2016 $ / item	Jun. 30, 2016 $ / item	Dec. 31, 2017 USD ($) $ / shares $ / item shares	Dec. 31, 2016 USD ($) $ / shares $ / item shares
Members' Capital (Details) [Line Items]
Distribution Made to Limited Liability Company (LLC) Member, Cash Distributions Declared			$ 679,998	$ 809,870
DistributionsPerUnitOfNetIncome (in Dollars per Item) | $ / item	0.0946	0.1313
SaleProceedsDistributionMadeToMemberOrLimitedPartner			20,202	121,212
Partners' Capital Account, Redemptions			37,456	77,729
Limited Member [Member]
Members' Capital (Details) [Line Items]
Distribution Made to Limited Liability Company (LLC) Member, Cash Distributions Declared			$ 660,002	$ 787,998
Distributions Per Limited Partnership Unit Outstanding, Basic (in Dollars per share) | $ / shares			$ 0.38	$ 0.45
Weighted Average Limited Partnership Units Outstanding, Basic (in Shares) | shares			1,739,506	1,746,715
DistributionsPerUnitOfNetIncome (in Dollars per Item) | $ / item			0.11	0.13
DistributionsPerUnitOfReturnOfCapital (in Dollars per Item) | $ / item			0.27	0.32
SaleProceedsDistributionMadeToMemberOrLimitedPartner			$ 20,000	$ 120,000
SaleProceedsDistributionMadetomLimitedMemberPerUnit			$ 0.01	$ 0.07
Partners' Capital Account, Units, Redeemed (in Shares) | shares			6,000.0	10,835.5
Partners' Capital Account, Redemptions			$ 36,332	$ 75,397
Managing Member [Member]
Members' Capital (Details) [Line Items]
Distribution Made to Limited Liability Company (LLC) Member, Cash Distributions Declared			19,996	21,872
SaleProceedsDistributionMadeToMemberOrLimitedPartner			202	1,212
Partners' Capital Account, Redemptions			$ 1,124	$ 2,332