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3. EARNINGS PER SHARE (Details Narrative)
6 Months Ended
Nov. 30, 2014
Nov. 30, 2013
Employee Stock Purchase Plan    
Options not included in the computation of diluted net loss per share (in thousands) 175us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
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Stock Options    
Options not included in the computation of diluted net loss per share (in thousands) 3,418us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
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263us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
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