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Summary of Significant Accounting Policies (Details) (Teucrium Soybean Fund [Member], USD $)
 3 Months Ended 12 Months Ended
Dec. 31, 2011
Dec. 31, 2012
Jan. 01, 2013
Mar. 04, 2012
Teucrium Soybean Fund [Member]
        
Creations and Redemptions        
Common units per Creation Basket   25,000   50,000
Common units per Redemption Basket   25,000   50,000
Minimum level of shares per Redemption Basket minimum level   50,000    
Minimum number of Redemption Baskets   2    
Cash Equivalents        
Money market funds $ 2,055,369 $ 6,169,205    
Sponsor Fee and Allocation of Expenses        
Annual sponsor fee   1.00%    
Management fees 4,930 63,352    
Reduction in expenses due to Sponsor involvement 25,000 11,600    
Reduction in expenses due to Sponsor cap 1,200      
Expenses subject to reimbursement   560,000    
Maximum daily expense accrual   $ 1,375 $ 821