Summary of Significant Accounting Policies - Pre-launch Inventory - Additional Information (Detail) - USD ($) |
Nov. 30, 2015 |
May. 31, 2015 |
May. 31, 2014 |
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| Summary Of Significant Accounting Policies [Line Items] | |||
| Pre-launch inventory qualified for capitalization | $ 0 | $ 0 | $ 0 |
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- Definition Pre Launch Inventory No definition available.
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- Definition Summary Of Significant Accounting Policies [Line Items] No definition available.
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