Statements of Partner's Capital - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
BEGINNING BALANCE	$ 4,202,986	$ 4,124,308	$ 4,202,986	$ 4,281,180
Net Income	1,575,407	724,705	1,575,407	724,705
Cash Distributions	(1,207,080)	(802,899)
ENDING BALANCE		4,202,986	4,571,313	4,202,986
General Partner [Member]
BEGINNING BALANCE	225,107	224,031	225,107	220,759
Net Income	15,754	7,247
Cash Distributions	(7,080)	(2,899)
ENDING BALANCE		225,107	233,781	225,107
General Partner [Member] | Cumulative Net Income [Member]
BEGINNING BALANCE	384,051	382,257	384,051	376,804
Net Income	15,754	7,247
Cash Distributions
ENDING BALANCE		384,051	399,805	384,051
General Partner [Member] | Cumulative Cash Distributions [Member]
BEGINNING BALANCE	(158,944)	(158,226)	(158,944)	(156,045)
Net Income
Cash Distributions	(7,080)	(2,899)
ENDING BALANCE		(158,944)	(166,024)	(158,944)
Limited Partner [Member]
BEGINNING BALANCE	3,977,879	3,900,277	3,977,879	4,060,421
Net Income	1,559,653	717,458
Cash Distributions	(1,200,000)	(800,000)
ENDING BALANCE		3,977,879	4,337,532	3,977,879
Limited Partner [Member] | Cumulative Net Income [Member]
BEGINNING BALANCE	44,386,908	44,209,306	44,386,908	43,669,450
Net Income	1,559,653	717,458
Cash Distributions
ENDING BALANCE		44,386,908	45,946,561	44,386,908
Limited Partner [Member] | Cumulative Cash Distributions [Member]
BEGINNING BALANCE	(78,927,268)	(78,827,268)	(78,927,268)	(78,127,268)
Net Income
Cash Distributions	(1,200,000)	(800,000)
ENDING BALANCE		(78,927,268)	(80,127,268)	(78,927,268)
Limited Partner [Member] | Capital Contributions Net Of Offering Costs [Member]
BEGINNING BALANCE	39,358,468	39,358,468	39,358,468	39,358,468
Net Income
Cash Distributions
ENDING BALANCE		39,358,468	39,358,468	39,358,468
Limited Partner [Member] | Reallocation [Member]
BEGINNING BALANCE	(840,229)	(840,229)	(840,229)	(840,229)
Net Income
Cash Distributions
ENDING BALANCE		$ (840,229)	$ (840,229)	$ (840,229)