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STATEMENTS OF CASH FLOWS (Teucrium Natural Gas Fund [Member], USD $)
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Teucrium Natural Gas Fund [Member]
    
Cash flows from operating activities:    
Net income (loss) $ 367,368 $ (377,271)
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:    
Net change in unrealized appreciation or depreciation on commodity futures contracts (492,549) (132,570)
Changes in operating assets and liabilities:    
Collateral, due from broker 367,374 81,598
Interest receivable 45 (10)
Other assets 2,817 3,055
Collateral, due to broker 136,990   
Management fee payable to Sponsor (601)   
Other liabilities 674 (6,278)
Net cash (used in) provided by operating activities 382,118 (431,476)
Cash flows from financing activities:    
Proceeds from sale of Shares    648,677
Redemption of Shares (1,211,768)   
Net cash (used in) provided by financing activities (1,211,768) 648,677
Net change in cash and cash equivalents (829,650) 217,201
Cash and cash equivalents, beginning of period 4,476,336 1,277,159
Cash and cash equivalents, end of period $ 3,646,686 $ 1,494,360