Statements of Partners' Capital (USD $)	Total	Class A Limited Partners	Class B Limited Partners	General Partners
Partners' Capital, beginning of period at Dec. 31, 2011	$ 6,726,893	$ 6,725,852	$ 0	$ 1,041
Limited Partners' Capital Account, Units Outstanding, beginning of period at Dec. 31, 2011		2,949,979	253,287
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	(2,148)	(2,127)	0	(21)
Partners' Capital, end of period at Dec. 31, 2012	6,724,745	6,723,725	0	1,020
Limited Partners' Capital Account, Units Outstanding, end of period at Dec. 31, 2012		2,949,979	253,287
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	1,010,606	(82,607)	1,094,151	(938)
Partners' Capital, end of period at Mar. 31, 2013	$ 7,735,351	$ 6,641,118	$ 1,094,151	$ 82
Limited Partners' Capital Account, Units Outstanding, end of period at Mar. 31, 2013		2,949,979	253,287