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STATEMENTS OF CHANGES IN NET ASSETS (Teucrium Corn Fund [Member], USD $)
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Teucrium Corn Fund [Member]
    
Operations    
Net income (loss) $ (3,136,810) $ (4,456,099)
Capital Transactions    
Issuance of shares 22,723,371 3,964,375
Redemption of Shares (17,298,340) (5,165,146)
Total capital transactions 5,425,031 (1,200,771)
Net change in net assets 2,288,221 (5,656,870)
Net assets, beginning of period 37,686,512 71,268,521
Net assets, end of period $ 39,974,733 $ 65,611,651
Net asset value per share at beginning of period $ 44.34 $ 41.92
At end of period $ 41.00 $ 39.17