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Fair value third party under deferred financing costs (Detail) (USD $)
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Dec. 31, 2012
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Jun. 30, 2012
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| Fair Value Third Party Under Deferred Financing Costs [Line Items] | ||
| Total deferred financing costs | $ 1,605,948 | |
| Amortization of Deferred Financing Costs, as of December 31, 2012 | (62,523) | |
| Deferred Financing Costs, Net, as of December 31, 2012 | 1,543,425 | 150,150 |
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Placement Agent and Other Fees Associated With Convertible Note Offering
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| Fair Value Third Party Under Deferred Financing Costs [Line Items] | ||
| Total deferred financing costs | 312,710 | |
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Convertible Note Broker Warrants
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| Fair Value Third Party Under Deferred Financing Costs [Line Items] | ||
| Total deferred financing costs | 137,238 | |
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Third Party Share Grant
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| Fair Value Third Party Under Deferred Financing Costs [Line Items] | ||
| Total deferred financing costs | $ 1,156,000 |