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Rescission Liabilities - Additional Information (Detail) (USD $)
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Feb. 28, 2015
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May 31, 2014
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May 31, 2013
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| Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items] | |||
| Rescission liability | $ 353,000us-gaap_LitigationReserveCurrent | $ 378,000us-gaap_LitigationReserveCurrent | $ 536,500us-gaap_LitigationReserveCurrent |
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- Details
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- Definition
Carrying amount of reserve for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs, which is expected to be paid within one year of the date of the statement of financial position. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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