Consolidated Statements of Operations (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Gain (loss) on trading of commodity contracts:
Realized gain (loss) on closed positions	$ (779,555)	$ 1,080,701	$ (1,420,214)	$ 1,018,432
Change in unrealized gain (loss) on open positions	273,115	1,570,718	(441,764)	(361,647)
Foreign currency transaction gain (loss)	(9,944)	(28,589)	(25,345)	87,503
Total Trading gain (loss)	(516,384)	2,622,830	(1,887,323)	744,288
Net investment income (loss):
Interest income	29,255	89,762	183,719	195,896
Realized gain (loss) on fixed income securities	(18,353)	(10,280)	(196,445)	(29,589)
Change in unrealized gain (loss) on fixed income securities	20,421	(106,051)	122,128	(110,082)
Total net investment gain (loss)	31,323	(26,569)	109,402	56,225
Expenses:
Commissions	302,411	473,960	1,036,585	1,618,681
Advisory fees	13,729	15,829	40,594	46,689
Management fees	128,690	164,049	368,089	558,605
Incentive fees	25,462	38,017	29,873	155,519
Ongoing offering expenses	21,000	20,000	58,467	125,000
Operating expenses	150,000	213,950	420,534	586,002
Total expenses	641,292	925,805	1,954,142	3,090,496
Total income (loss)	(1,126,353)	1,670,456	(3,732,063)	(2,289,983)
Non-Trading income (loss):
Interest on Non-Trading reserve	76	228	218	2,636
Collections in excess of impaired value		1,328,832		1,672,495
Legal and administrative fees		(2,408)	(139,299)	(126,524)
Management fees paid to US Bank	(59,931)	(37,658)	(235,705)	(161,466)
Non-Trading income (loss)	(59,855)	1,288,994	(374,786)	1,387,141
Net income (loss)	(1,186,208)	2,959,450	(4,106,849)	(902,842)
Class A [Member]
Expenses:
Commissions	296,274	464,016	1,015,126	1,588,313
Class B [Member]
Expenses:
Commissions	$ 6,137	$ 9,944	$ 21,459	$ 30,368