Nature of Business and Significant Accounting Policies (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) class	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
Assets allocated to GP 11, GP 14 and GP 17	$ 0		$ 0
Assets allocated to GP 3					$ 0
Classes of interests
Number of classes of limited partner interests | class			7
Income taxes
Income taxes	0	$ 0	$ 0	$ 0
Debt
Debt carried by partners	0		0		0
General Partner
Organization and offering costs
Unreimbursed organization and offering costs	313,000		$ 313,000
General Partner | Maximum
Organization and offering costs
Allowable monthly reimbursement of organization and offering costs as a percent of net Partnership asset value			0.083%
Allowable annual reimbursement of organization and offering costs as a percent of net Partnership asset value			1.00%
Swap Contracts | Deutsche Bank Total Return Swap
Swap contracts
Notional value	29,622,256		$ 29,622,256		31,317,256
Cash margin balance	$ 5,082,500		$ 5,082,500		$ 6,290,000