Changes in Net Assets (Unadited) (USD $)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Changes In Net Assets Unadited
Net assets at beginning of period	$ 83,713,162	$ 99,674,394
Capital contributions	4,006,073	3,156,460
Redemptions	6,547,084	2,565,450
Net decrease from operations	(1,798,627)	(210,528)
NET ASSETS AT END OF PERIOD	$ 79,373,524	$ 100,054,876