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CONTRACTS AND AGREEMENTS (Tables)
 6 Months Ended
Jun. 30, 2017
Contractors [Abstract]  
Brokerage Commissions
 
 
For the six months
ended June 30, 2017
 
 
For the six months
ended June 30, 2016
 
Total commissions accrued to brokers
 
$
800,656
 
 
$
1,085,522
 
Total commissions as an annualized percentage of average net assets
 
 
0.34
%
 
 
0.42
%
Commissions accrued as a result of rebalancing
 
$
647,003
 
 
$
1,030,262
 
Percentage of commissions accrued as a result of rebalancing
 
 
80.81
%
 
 
94.91
%
Commissions accrued as a result of creation and redemption activity
 
$
153,653
 
 
$
55,260
 
Percentage of commissions accrued as a result of creation and redemption activity
 
 
19.19
%
 
 
5.09
%