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Fair Value Measurements Using Significant Unobservable Inputs Level 3 (Detail) (USD $)
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3 Months Ended | 6 Months Ended | 97 Months Ended | ||
|---|---|---|---|---|---|
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Mar. 31, 2014
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Mar. 31, 2013
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Mar. 31, 2014
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Mar. 31, 2013
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Mar. 31, 2014
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|
| Adjustments to estimated fair value | $ (7,541,693) | $ 0 | $ (7,541,693) | $ 0 | $ (7,541,693) |
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Fair Value, Inputs, Level 3
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| Beginning balance at December 31, 2013 | 0 | ||||
| Issuances | 10,391,693 | ||||
| Adjustments to estimated fair value | (484,875) | ||||
| Ending balance at March 31, 2014 | $ 9,906,818 | $ 9,906,818 | $ 9,906,818 | ||