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Fair Value Measurements (Details) (Teucrium Natural Gas Fund [Member], USD $)
Dec. 31, 2012
Dec. 31, 2011
Assets:    
Cash equivalents $ 4,476,336 $ 1,277,159
Commodity futures contracts 9,550   
Total 4,485,886  
Liabilities:    
Commodity futures contracts 233,919 602,440
Commodity Contract [Member]
   
Assets:    
Commodity futures contracts 9,550   
Liabilities:    
Commodity futures contracts 233,919 602,440
Level 1 [Member]
   
Assets:    
Cash equivalents 4,476,336 1,277,159
Total 4,485,886  
Level 1 [Member] | Commodity Contract [Member]
   
Assets:    
Commodity futures contracts 9,550  
Liabilities:    
Commodity futures contracts 233,919 602,440
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