Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2018

Fair Value Disclosures [Abstract]

Derivative Instrument Fair Value Based on Hierarchy

December 31, 2018	Total		Level 1		Level 2		Level 3
Assets
Futures	$	15,181	$	15,181	$	-	$	-
Total assets	$	15,181	$	15,181	$	-	$	-
Liabilities
Futures	$	25,826	$	25,826	$	-	$	-
Total liabilities	$	25,826	$	25,826	$	-	$	-