Quarterly report pursuant to sections 13 or 15(d)

Activity Related to Notes (Detail)

v2.4.0.8
Activity Related to Notes (Detail) (USD $)
9 Months Ended 12 Months Ended
Feb. 28, 2014
May 31, 2013
Debt Instrument [Line Items]    
Face amount of notes $ 7,221,250 $ 6,588,250
Unamortized discount (2,290,019) (4,539,886)
Exercise Right of Repayment (250,000)  
Conversions (2,450,000) (567,000)
Total carrying value of Notes 2,231,231 1,481,364
Short-term portion of Notes (248,423) (328,347)
Long-term portion of Notes $ 1,982,808 $ 1,153,017