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Financial Highlights (Details) (Teucrium Soybean Fund [Member], USD $)
 3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Jan. 01, 2013
Sep. 16, 2011
Teucrium Soybean Fund [Member]
                        
Net asset value per share at beginning of period       $ 21.86   $ 25.0       $ 21.86   $ 25.0
Investment income           $ 0.0       $ 0.02    
Net realized and unrealized gain (loss) on commodity futures contracts           $ (0.19)       $ 4.15    
Total expenses           $ (2.95)       $ (1.9)    
Net increase (decrease) in net asset value $ (2.46) $ 2.18 $ 0.34 $ 2.21 $ (0.05) $ (3.14) $ (3.09) $ 0.0 $ 0.0 $ 2.27    
At end of period $ 24.13       $ 21.86 $ 21.86       $ 24.13   $ 25.0
Total return           (12.56%)       10.38%    
Total expense           3.05%       7.50%    
Net investment gain (loss)           (3.00%)       (7.42%)    
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                 $ 1,375 $ 821