General form of registration statement for all companies including face-amount certificate companies

Acquisition of Patents - Additional Information (Detail)

v3.3.1.900
Acquisition of Patents - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Oct. 16, 2012
Nov. 30, 2015
Nov. 30, 2014
May. 31, 2015
May. 31, 2014
Acquired Finite-Lived Intangible Assets [Line Items]          
Asset purchase, cash paid $ 3,500,000        
Intangible asset acquired   $ 3,500,000   $ 3,500,000 $ 3,500,000
Estimated aggregate future amortization expense in next twelve months   350,000   350,000  
Estimated aggregate future amortization expense in year two   350,000   350,000  
Estimated aggregate future amortization expense in year three   350,000   350,000  
Estimated aggregate future amortization expense in year four   350,000   350,000  
Estimated aggregate future amortization expense in year five   350,000   $ 350,000  
Patents          
Acquired Finite-Lived Intangible Assets [Line Items]          
Asset purchase, cash paid $ 3,500,000        
Estimated useful life of acquired asset 8 years     8 years  
Amortization expense related to patents   $ 87,500 $ 175,000 $ 350,000 $ 350,000