Commitments and Contingencies - Additional Information (Detail) - USD ($) |
Jan. 20, 2010 |
May. 31, 2015 |
Nov. 30, 2014 |
|---|---|---|---|
| Long-term Purchase Commitment [Line Items] | |||
| Common shares subscribed but not issued | 423,750 | ||
| Common shares subscribed but not issued value | $ 2,373,000 | $ 2,373,000 | $ 2,373,000 |
| Accrual for outstanding legal matters | $ 0 | $ 0 | |
| Equity Based Compensation | |||
| Long-term Purchase Commitment [Line Items] | |||
| Shares available for issuance | 550,000 | ||
| Common shares issued in escrow | 126,250 |