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Financial Highlights (Details) (Teucrium Wheat Fund [Member], USD $)
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Sep. 16, 2011
Teucrium Wheat Fund [Member]
      
Net asset value per share at beginning of period $ 21.25 $ 22.36 $ 25
Investment income $ 0.00 $ 0.00  
Net realized and unrealized gain (loss) on commodity futures contracts $ (2.62) $ (0.35)  
Total expenses $ (0.22) $ (0.59)  
Net increase (decrease) in net asset value $ (2.84) $ (0.94)  
At end of period $ 18.41 $ 21.42 $ 25
Total return (13.36%) (4.20%)  
Total expense 4.41% 11.06%  
Net investment gain (loss) (4.35%) (11.00%)  
Expenses subject to reimbursement $ 560,000