XML 37 R20.htm IDEA: XBRL DOCUMENT v3.8.0.1
CONTRACTS AND AGREEMENTS (Tables)
 12 Months Ended
Dec. 31, 2017
Contractors [Abstract]  
Brokerage Commissions
 
 
For the Year Ended 
December 31, 2017
 
 
For the Year Ended 
December 31, 2016
 
 
For the Year Ended 
December 31, 2015
 
Total commissions accrued to brokers
 
$
1,728,440
 
 
$
2,000,888
 
 
$
2,371,433
 
Total commissions as annualized percentage of average total net assets
 
 
0.35
%
 
 
0.37
%
 
 
0.39
%
Commissions accrued as a result of rebalancing
 
$
1,420,519
 
 
$
1,872,019
 
 
$
2,089,974
 
Percentage of commissions accrued as a result of rebalancing
 
 
82.19
%
 
 
93.56
%
 
 
88.13
%
Commissions accrued as a result of creation and redemption activity
 
$
307,921
 
 
$
128,869
 
 
$
281,459
 
Percentage of commissions accrued as a result of creation and redemption activity
 
 
17.81
%
 
 
6.44
%
 
 
11.87
%