Statements of Partner's Capital (Unaudited) - USD ($)	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Cumulative Net Income [Member] | General Partner [Member]
Partners' Capital, Beginning Balance	$ 370,414	$ 368,916	$ 368,941	$ 366,065	$ 364,759	$ 365,316	$ 368,941	$ 365,316
Cash Distributions
Net Income	3,027	1,498	(25)	382	1,306	(557)
Partners' Capital, Ending Balance	373,441	370,414	368,916	366,447	366,065	364,759	373,441	366,447
Cumulative Net Income [Member] | Limited Partner [Member]
Partners' Capital, Beginning Balance	43,036,843	42,888,594	42,891,026	42,606,314	42,476,972	42,532,147	42,891,026	42,532,147
Cash Distributions
Net Income	299,658	148,249	(2,432)	37,798	129,342	(55,175)
Partners' Capital, Ending Balance	43,336,501	43,036,843	42,888,594	42,644,112	42,606,314	42,476,972	43,336,501	42,644,112
Cumulative Cash Distributions [Member] | General Partner [Member]
Partners' Capital, Beginning Balance	(153,489)	(152,900)	(152,900)	(151,749)	(151,449)	(151,449)	(152,900)	(151,449)
Cash Distributions	(1,211)	(589)		(153)	(300)
Net Income
Partners' Capital, Ending Balance	(154,700)	(153,489)	(152,900)	(151,902)	(151,749)	(151,449)	(154,700)	(151,902)
Cumulative Cash Distributions [Member] | Limited Partner [Member]
Partners' Capital, Beginning Balance	(77,927,268)	(77,827,268)	(77,327,268)	(77,227,268)	(76,777,268)	(76,677,268)	(77,327,268)	(76,677,268)
Cash Distributions	(100,000)	(100,000)	(500,000)		(450,000)	(100,000)
Net Income
Partners' Capital, Ending Balance	(78,027,268)	(77,927,268)	(77,827,268)	(77,227,268)	(77,227,268)	(76,777,268)	(78,027,268)	(77,227,268)
Capital Contributions Net of Offering Costs [Member] | Limited Partner [Member]
Partners' Capital, Beginning Balance	39,358,468	39,358,468	39,358,468	39,358,468	39,358,468	39,358,468	39,358,468	39,358,468
Cash Distributions
Net Income
Partners' Capital, Ending Balance	39,358,468	39,358,468	39,358,468	39,358,468	39,358,468	39,358,468	39,358,468	39,358,468
Reallocation [Member] | Limited Partner [Member]
Partners' Capital, Beginning Balance	(840,229)	(840,229)	(840,229)	(840,229)	(840,229)	(840,229)	(840,229)	(840,229)
Cash Distributions
Net Income
Partners' Capital, Ending Balance	(840,229)	(840,229)	(840,229)	(840,229)	(840,229)	(840,229)	(840,229)	(840,229)
General Partner [Member]
Partners' Capital, Beginning Balance	216,925	216,016	216,041	214,316	213,310	213,867	216,041	213,867
Cash Distributions	(1,211)	(589)		(153)	(300)
Net Income	3,027	1,498	(25)	382	1,306	(557)
Partners' Capital, Ending Balance	218,741	216,925	216,016	214,545	214,316	213,310	218,741	214,545
Limited Partner [Member]
Partners' Capital, Beginning Balance	3,627,814	3,579,565	4,081,997	3,897,285	4,217,943	4,373,118	4,081,997	4,373,118
Cash Distributions	(100,000)	(100,000)	(500,000)		(450,000)	(100,000)
Net Income	299,658	148,249	(2,432)	37,798	129,342	(55,175)
Partners' Capital, Ending Balance	3,827,472	3,627,814	3,579,565	3,935,083	3,897,285	4,217,943	3,827,472	3,935,083
Partners' Capital, Beginning Balance	3,844,739	3,795,581	4,298,038	4,111,601	4,431,253	4,586,985	4,298,038	4,586,985
Cash Distributions	(101,211)	(100,589)	(500,000)	(153)	(450,300)	(100,000)
Net Income	302,686	149,747	(2,457)	38,180	130,648	(55,732)	449,975	113,096
Partners' Capital, Ending Balance	$ 4,046,213	$ 3,844,739	$ 3,795,581	$ 4,149,629	$ 4,111,601	$ 4,431,253	$ 4,046,213	$ 4,149,629