Operations (Tables)

12 Months Ended

Dec. 31, 2013

Brokers and Dealers [Abstract]

Schedule of Due to (from) Broker-Dealers and Clearing Organizations [Table Text Block]

“Brokerage fee” includes the following across each class of units:

Recipient	Nature of Payment	Class A Units			Class B Units
Managing Owner	Managing Owner fee**		0.75	%		0.75	%
Selling Agent	Selling commission		2.00	%		0.00	%
Managing Owner	Underwriting expenses***		0.35	%		0.35	%
Managing Owner	Clearing, NFA, and exchange fees (capped at)*		1.57	%		1.57	%
			4.67	%		2.67	%

* Beginning October 22, 2013, the Trust unbundled these expenses; these expenses are approximately, 0.92% of the net asset value for both Class A and Class B.

** Effective October 22, 2013, the Managing Owner fee was reduced to 0.50% and waived for the 4th quarter, 2013.

*** Effective October 22, 2013, Underwriting expenses were waived for the 4th quarter, 2013.