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Related Party Transactions - Additional Information (Detail) (USD $)
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3 Months Ended | 6 Months Ended | 12 Months Ended | 115 Months Ended | 121 Months Ended | |||
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Nov. 30, 2013
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Nov. 30, 2012
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Nov. 30, 2013
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Nov. 30, 2012
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May 31, 2013
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May 31, 2012
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May 31, 2013
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Nov. 30, 2013
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| Related Party Transaction [Line Items] | ||||||||
| Issuance of common stock shares for notes payable | 6,182,179 | 8,106,282 | ||||||
| Common stock warrants, exercise price | 0.75 | 0.75 | 0.75 | |||||
| Interest expense related amortization | $ 1,595,004 | $ 257,313 | $ 3,047,401 | $ 257,313 | $ 1,703,616 | $ 2,063 | $ 2,440,542 | $ 5,487,943 |
| Interest on debt | 302,748 | 58,070 | 411,551 | 60,963 | 245,194 | 16,515 | 384,963 | 796,517 |
| Common stock payable | 47,880 | 47,880 | 117,778 | 388,000 | 117,778 | 47,880 | ||
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Note Payable 15% Due 2014
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| Related Party Transaction [Line Items] | ||||||||
| Convertible notes issued face value | 500,000 | 500,000 | ||||||
| Convertible notes, interest payable rate | 15.00% | 15.00% | 15.00% | 15.00% | 15.00% | |||
| Convertible notes, maturity date | Apr. 11, 2014 | Apr. 11, 2014 | ||||||
| Issuance of common stock shares for notes payable | 150,000 | 150,000 | ||||||
| Interest payable, per share of common stock | $ 0.50 | $ 0.50 | $ 0.50 | $ 0.50 | $ 0.50 | |||
| Interest on debt | 19,000 | 38,000 | ||||||
| Common stock payable | 48,000 | 48,000 | 48,000 | |||||
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Note Payable 5% Due 2015
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| Related Party Transaction [Line Items] | ||||||||
| Convertible notes issued face value | 1,000,000 | |||||||
| Convertible notes, interest payable rate | 5.00% | 5.00% | ||||||
| Convertible notes, maturity date | Oct. 16, 2015 | |||||||
| Convertible notes, conversion price | $ 0.75 | $ 0.75 | ||||||
| Common stock warrants issued | 1,333,333 | 1,333,333 | ||||||
| Common stock warrants, exercise price | 2.00 | 2.00 | ||||||
| Common stock warrants, expire date | Oct. 16, 2014 | Oct. 16, 2014 | ||||||
| Convertible note, carrying value | 375,000 | 375,000 | 207,000 | 207,000 | 375,000 | |||
| Interest expense related amortization | $ 84,000 | $ 41,000 | $ 168,000 | $ 41,000 | $ 207,000 | |||