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	$ 6,648,838	$ 6,648,835	$ 0	$ 3
Limited Partners' Capital Account, Units Outstanding, beginning of period at Dec. 31, 2010		2,949,979	253,287
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income	78,055	77,017	0	1,038
Partners' Capital, end of period at Dec. 31, 2011	6,726,893	6,725,852	0	1,041
Limited Partners' Capital Account, Units Outstanding, end of period at Dec. 31, 2011		2,949,979	253,287
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income	45,634	45,177	0	457
Partners' Capital, end of period at Sep. 30, 2012	$ 6,772,527	$ 6,771,029	$ 0	$ 1,498
Limited Partners' Capital Account, Units Outstanding, end of period at Sep. 30, 2012		2,949,979	253,287