Derivative Instruments - Offsetting of Derivative Liabilities (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Offsetting of Derivative Liabilities
Gross Amount of Recognized Liabilities	$ 1,754,962	$ 2,004,385
Gross Amounts Offset in the Consolidated Statement of Financial Condition	(1,754,962)	(2,004,385)
Futures Contracts
Offsetting of Derivative Liabilities
Gross Amount of Recognized Liabilities	1,584,619	1,225,072
Gross Amounts Offset in the Consolidated Statement of Financial Condition	(1,584,619)	(1,225,072)
Forward Contracts
Offsetting of Derivative Liabilities
Gross Amount of Recognized Liabilities	87,578	183,443
Gross Amounts Offset in the Consolidated Statement of Financial Condition	(87,578)	(183,443)
Swap Contracts
Offsetting of Derivative Liabilities
Gross Amount of Recognized Liabilities	82,765	595,870
Gross Amounts Offset in the Consolidated Statement of Financial Condition	$ (82,765)	$ (595,870)