Derivative Instruments - Derivatives by Line Item in Statement of Operations (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Futures, Forward, and Swap Contracts
Net gain (loss) from futures and forward currency trading
Total realized and changed in unrealized net gain (loss)	$ 920,591	$ 13,095,548
Futures Contracts
Net gain (loss) from futures and forward currency trading
Realized	2,661,434	14,610,964
Change in unrealized	(1,649,420)	1,342,424
Total realized and changed in unrealized net gain (loss)	1,012,014	15,953,388
Forward Contracts
Net gain (loss) from futures and forward currency trading
Realized	(67,154)	(116,827)
Change in unrealized	(478,502)	320,800
Total realized and changed in unrealized net gain (loss)	(545,656)	203,973
Swap Contracts
Net gain (loss) from futures and forward currency trading
Change in unrealized	454,233	(3,061,813)
Total realized and changed in unrealized net gain (loss)	$ 454,233	$ (3,061,813)