Derivative Instruments - Collateral by Counterparty (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Derivatives Assets and Liabilities Collateral Received by Counterparty
Net Amount of Unrealized Gain Presented in the Consolidated Statement of Financial Condition		$ 3,370,173
Net Amount of Unrealized Gain Presented in the Consolidated Statement of Financial Condition	$ (4,085,888)
Net Amount		3,370,173
Net Amount	(4,085,888)
ADM Investor Services, Inc.
Derivatives Assets and Liabilities Collateral Received by Counterparty
Net Amount of Unrealized Gain Presented in the Consolidated Statement of Financial Condition	547,129
Net Amount of Unrealized Gain Presented in the Consolidated Statement of Financial Condition		(75,551)
Net Amount	547,129
Net Amount		(75,551)
Deutsche Bank AG
Derivatives Assets and Liabilities Collateral Received by Counterparty
Net Amount of Unrealized Gain Presented in the Consolidated Statement of Financial Condition		3,037,439
Net Amount of Unrealized Gain Presented in the Consolidated Statement of Financial Condition	(5,071,616)
Net Amount		3,037,439
Net Amount	(5,071,616)
SG Americas Securities, LLC
Derivatives Assets and Liabilities Collateral Received by Counterparty
Net Amount of Unrealized Gain Presented in the Consolidated Statement of Financial Condition	438,599	408,285
Net Amount	$ 438,599	$ 408,285