Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2017

Accounting Policies [Abstract]

Derivative Fair Value of Assets and Liabilities Using Unobservable Inputs

During the years ended December 31, 2017 and 2016, there were no transfers of assets or liabilities between Level 1 and Level 2.

	December 31, 2017		Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets
Investments in U.S. government securities, at    fair value	$	25,107,663	$	—	$	25,107,663	$	—
Options purchased		211,200		211,200		—		—
Total assets		25,318,863		211,200		25,107,663		—
Liabilities
Written options	$	209,000	$	209,000	$	—	$	—
Total liabilities		209,000		209,000		—		—
Net fair value	$	25,109,863	$	2,200	$	25,107,663	$	—

	December 31, 2016		Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1)			Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets
Investments in U.S. government securities, at    fair value	$	34,993,486	$	—		$	34,993,486	$	—
Options purchased		621,000		621,000			—		—
Total assets		35,614,486		621,000			34,993,486		—
Liabilities
Written options	$	699,200	$	699,200		$	—	$	—
Total liabilities		699,200		699,200			—		—
Net fair value	$	34,915,286	$	(78,200	)	$	34,993,486	$	—