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Fair Value Measurements (Schedule of Assets and Liabilities Measured at Fair Value) (Details) (Teucrium Corn Fund [Member], USD $)
Dec. 31, 2012
Dec. 31, 2011
Assets:    
Cash equivalents $ 34,631,982 $ 69,022,336
Commodity futures contracts    1,928,408
Total   70,950,744
Liabilities:    
Commodity futures contracts 2,213,775 2,711,523
Commodity Contract [Member]
   
Assets:    
Commodity futures contracts    1,928,408
Liabilities:    
Commodity futures contracts 2,213,775 2,711,523
Level 1 [Member]
   
Assets:    
Cash equivalents 34,631,982 69,022,336
Total   70,950,744
Level 1 [Member] | Commodity Contract [Member]
   
Assets:    
Commodity futures contracts   1,928,408
Liabilities:    
Commodity futures contracts 2,213,775 2,711,523
Level 2 [Member]
   
Assets:    
Cash equivalents      
Total     
Level 2 [Member] | Commodity Contract [Member]
   
Assets:    
Commodity futures contracts     
Liabilities:    
Commodity futures contracts      
Level 3 [Member]
   
Assets:    
Cash equivalents      
Total     
Level 3 [Member] | Commodity Contract [Member]
   
Assets:    
Commodity futures contracts     
Liabilities:    
Commodity futures contracts