Quarterly report pursuant to Section 13 or 15(d)

Activity Related to Notes (Detail)

v3.8.0.1
Activity Related to Notes (Detail) - Short-Term Convertible Notes - USD ($)
Aug. 31, 2017
May 31, 2017
Debt Instrument [Line Items]    
Face amount of Notes $ 6,038,500 $ 1,150,000
Unamortized discount (1,222,000) (92,000)
Unamortized issuance costs (322,000)  
Total carrying value of Notes $ 4,494,500 $ 1,058,000