Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2016

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

The following table presents the Trust’s fair value hierarchy for those assets and liabilities measured at fair value on a recurring basis as of March 31, 2016 and December 31, 2015, respectively:

	March 31, 2016
	Level 1			Level 2		Level 3		Total
Assets
Unrealized gain on open contracts:
Futures positions	$	2,645		$	-	$	-	$	2,645
		2,645			-		-		2,645
Liabilities
Options written on futures contracts		(12,590	)		-		-		(12,590	)
		(12,590	)		-		-		(12,590	)
Total fair value	$	(9,945	)	$	-	$	-	$	(9,945	)

	December 31, 2015
	Level 1			Level 2		Level 3		Total
Assets
Unrealized gain on open contracts:
Futures positions	$	3,414		$	-	$	-	$	3,414
		3,414			-		-		3,414
Liabilities
Options written on futures contracts		(8,059	)		-		-		(8,059	)
		(8,059	)		-		-		(8,059	)
Total fair value	$	(4,645	)	$	-	$	-	$	(4,645	)