Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2018

Fair Value Disclosures [Abstract]

Summary of Assets and Liabilities Measured at Fair Value

December 31, 2018	Total		Level 1		Level 2		Level 3
Assets
Forwards	$	137,302	$	—	$	137,302	$	—
Total assets	$	137,302	$	—	$	137,302	$	—
Liabilities
Forwards	$	108,245	$	—	$	108,245	$	—
Total liabilities	$	108,245	$	—	$	108,245	$	—
December 31, 2017	Total		Level 1		Level 2		Level 3
Assets
Futures	$	9,793,492	$	9,793,492	$	—	$	—
Forwards		11,774,122		—		11,774,122		—
Total assets	$	21,567,614	$	9,793,492	$	11,774,122	$	—
Liabilities
Futures	$	4,789,432	$	4,789,432	$	—	$	—
Forwards		10,900,848		—		10,900,848		—
Total liabilities	$	15,690,280	$	4,789,432	$	10,900,848	$	—