Statements of Partners' Capital (USD $)	Total	Class A Limited Partners	Class B Limited Partners	General Partners
Partners' Capital, beginning of period at Dec. 31, 2010	$ 10,345,803	$ 10,256,394	$ 89,409	$ 0
Limited Partners' Capital Account, Units Outstanding, beginning of period at Dec. 31, 2010		3,263,890	236,110
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	553,476	475,159	77,430	887
Partners' Capital, end of period at Dec. 31, 2011	10,899,279	10,731,553	166,839	887
Limited Partners' Capital Account, Units Outstanding, end of period at Dec. 31, 2011		3,263,890	236,110
Increase (Decrease) in Partners' Capital [Roll Forward]
Partners' Capital Account, Class B Conversion Elections, Units		10,000	(10,000)
Partners' Capital Account, Class B Conversion Elections	0	7,066	(7,066)
Net income (loss)	21,446	(68,965)	90,196	215
Limited Partners' Capital Account, Distribution of Net Sale Proceeds	(3,500,000)	(3,250,031)	(249,969)
Partners' Capital, end of period at Sep. 30, 2012	$ 7,420,725	$ 7,419,623	$ 0	$ 1,102
Limited Partners' Capital Account, Units Outstanding, end of period at Sep. 30, 2012		3,273,890	226,110