Summary of Significant Accounting Policies - Stock-based Compensation - Additional Information (Detail) |
6 Months Ended | 12 Months Ended |
|---|---|---|
Nov. 30, 2015 |
May. 31, 2015 |
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| Summary Of Significant Accounting Policies [Line Items] | ||
| Estimated future unvested option forfeitures | 0.00% | 0.00% |
| X | ||||||||||
- Definition Estimated future unvested option forfeitures. No definition available.
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| X | ||||||||||
- Definition Summary Of Significant Accounting Policies [Line Items] No definition available.
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