Derivatives and Hedging (Details) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Offsetting of Derivative Assets [Line Items]
Gross amounts recognized	$ 98,259	$ 794,510
Gross amounts offset in the statements of financial condition	(532,962)	(493,636)
Net amounts presented in the statement of financial condition	(434,703)	300,874
Offsetting of Derivative Liabilities [Line Items]
Gross amounts recognized	1,402,808	1,184,674
Gross amounts offset in the statement of financial condition	(556,211)	(201,369)
Net amounts presented in the statement of financial condition	846,597	983,305
Unrealized currency loss	(2,387,585)	(2,389,680)
Net unrealized gain/(loss) on open contracts	(1,975,691)	(1,105,501)
Futures [Member]
Offsetting of Derivative Assets [Line Items]
Gross amounts recognized	98,259	652,044
Gross amounts offset in the statements of financial condition	(92,657)	(286,987)
Net amounts presented in the statement of financial condition	5,602	365,057
Offsetting of Derivative Liabilities [Line Items]
Gross amounts recognized	1,022,581	147,160
Gross amounts offset in the statement of financial condition	(174,782)	(133,216)
Net amounts presented in the statement of financial condition	847,799	13,944
Forward Contracts [Member]
Offsetting of Derivative Assets [Line Items]
Gross amounts recognized	0	142,466
Gross amounts offset in the statements of financial condition	(440,305)	(206,649)
Net amounts presented in the statement of financial condition	(440,305)	(64,183)
Offsetting of Derivative Liabilities [Line Items]
Gross amounts recognized	380,227	1,037,514
Gross amounts offset in the statement of financial condition	(381,429)	(68,153)
Net amounts presented in the statement of financial condition	$ (1,202)	$ 969,361