Annual report pursuant to Section 13 and 15(d)

Intangible Assets Activity (Detail)

v3.7.0.1
Intangible Assets Activity (Detail) - USD ($)
May 31, 2017
May 31, 2016
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross carrying amounts $ 3,500,000 $ 3,500,000
Accumulated amortization (1,618,770) (1,268,750)
Total amortizable intangible assets, net 1,881,230 2,231,250
Patents currently not amortized 35,989 35,989
Carrying value of intangibles, net $ 1,917,219 $ 2,267,239