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Financial Highlights (Details) (Teucrium Corn Fund [Member], USD $) | 3 Months Ended | 7 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2012 | Dec. 31, 2011 | Jan. 01, 2013
Teucrium Corn Fund [Member] |  |  |  |  |  |  |  |  |  |  |  |
Net asset value per share at beginning of period |  |  |  | $ 41.92 |  |  |  | $ 39.06 | $ 25.0 | $ 41.92 | $ 39.06 |
Investment income |  |  |  |  |  |  |  |  | $ 0.04 | $ 0.04 | $ 0.03 |
Net realized and unrealized gain (loss) on commodity futures contracts |  |  |  |  |  |  |  |  | $ 14.84 | $ 4.7 | $ 3.95 |
Total expenses |  |  |  |  |  |  |  |  | $ (0.82) | $ (2.32) | $ (1.12) |
Net increase (decrease) in net asset value | $ (4.06) | $ 6.38 | $ 2.85 | $ (2.75) | $ 1.81 | $ (0.28) | $ (3.87) | $ 5.2 | $ 14.06 | $ 2.42 | $ 2.86 |
At end of period | $ 44.34 |  |  |  | $ 41.92 |  |  |  | $ 39.06 | $ 44.34 | $ 41.92 |
Total return |  |  |  |  |  |  |  |  | 56.24% | 5.77% | 7.32% |
Total expense |  |  |  |  |  |  |  |  | 3.50% | 5.31% | 2.55% |
Net investment gain (loss) |  |  |  |  |  |  |  |  | (3.30%) | (5.23%) | (2.49%) |
Maximum daily expense accrual | $ 7,926 |  |  |  |  |  |  |  |  | $ 7,926 |  | $ 6,379
Reduction in expenses due to Sponsor involvement |  |  |  |  |  |  |  |  |  | $ 124,000 |  |

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