Statements of Operations (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Equity in Income (Loss) of Joint Ventures	$ 154,327	$ 720,494	$ (185,621)
Interest and Other Income	7,906	11,041	2,887
General and Administrative Expenses	184,300	178,059	211,222
Net Income (Loss)	(22,067)	553,476	(393,956)
Class A Limited Partners
Net Income (Loss)	(112,043)	475,159	(483,365)
Net Income (Loss) Allocated to:
Limited Partners	(112,043)	475,159	(483,365)
Net Income (Loss) per Weighted-Average Limited Partner Unit:
Net Income (Loss) per Weighted-Average Limited Partner Unit (in dollars per unit)	(0.03)	0.15	(0.15)
Weighted-Average Limited Partner Units Outstanding:
Weighted-Average Limited Partner Units Outstanding (in unit)	3,273,890	3,263,890	3,263,890
Class B Limited Partners
Net Income (Loss)	90,196	77,430	89,409
Net Income (Loss) Allocated to:
Limited Partners	90,196	77,430	89,409
Net Income (Loss) per Weighted-Average Limited Partner Unit:
Net Income (Loss) per Weighted-Average Limited Partner Unit (in dollars per unit)	0.40	0.33	0.38
Weighted-Average Limited Partner Units Outstanding:
Weighted-Average Limited Partner Units Outstanding (in unit)	226,110	236,110	236,110
General Partners
Net Income (Loss)	(220)	887	0
Net Income (Loss) Allocated to:
General Partners	$ (220)	$ 887	$ 0