Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2019

Fair Value Disclosures [Abstract]

Schedule of the Summary of the Master Fund's Assets and Liabilities at Fair Value, Classified According to the Levels Used to Value Them

A summary of the Master Fund’s assets and liabilities at fair value as of December 31, 2019, classified according to the levels used to value them, is as follows:

Assets	Quoted Prices in Active Market (Level 1)		Other Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Totals
U.S. Treasury Obligations	$	—	$	115,831,172	$	—	$	115,831,172
Unrealized appreciation on futures contracts		6,162,155		—		—		6,162,155
Total	$	6,162,155	$	115,831,172	$	—	$	121,993,327

The Master Fund did not hold any Level 3 securities during the year ended December 31, 2019.

A summary of the Master Fund’s assets and liabilities at fair value as of December 31, 2018, classified according to the levels used to value them, is as follows:

Assets	Quoted Prices in Active Market (Level 1)			Other Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Totals
U.S. Treasury Obligations	$	—		$	143,568,752	$	—	$	143,568,752
Liabilities
Unrealized depreciation on futures contracts		(7,560,832	)		—		—		(7,560,832	)
Total	$	(7,560,832	)	$	143,568,752	$	—	$	136,007,920