Quarterly report pursuant to Section 13 or 15(d)

Acquisition of Patents and Intangibles - Additional Information (Detail)

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Acquisition of Patents and Intangibles - Additional Information (Detail) - USD ($)
 3 Months Ended 6 Months Ended
Oct. 16, 2012
Aug. 31, 2019
Nov. 30, 2018
Aug. 31, 2018
Nov. 30, 2019
Nov. 30, 2018
May 31, 2019
Acquired Finite-Lived Intangible Assets [Line Items]              
Intangible asset acquired gross         $ 3,500,000    
Amortization expense related to acquired patents   $ 497,100 $ 152,900   994,200 $ 240,000  
Estimated aggregate future amortization expense in next twelve months         2,000,000    
Estimated aggregate future amortization expense in year two         2,000,000    
Estimated aggregate future amortization expense in year three         $ 1,400,000    
Acquisition of ProstaGene LLC, value     $ 11,558,000 $ 0      
Issuance of common stock shares         399,315,351   399,156,340
Common stock per shares         $ 0.001   $ 0.001
Estimated aggregate future amortization expense year four to ten         $ 1,100,000    
Estimated aggregate future amortization expense year eleven         940,000    
ProstaGene, LLC              
Acquired Finite-Lived Intangible Assets [Line Items]              
Acquisition of ProstaGene LLC, value         $ 11,558,000    
Issuance of common stock shares         20,278,000    
Common stock per shares         $ 0.57    
ProstaGene, LLC | Dr .Pestell | Stock Restriction Agreement              
Acquired Finite-Lived Intangible Assets [Line Items]              
Restricted common stock, shares         8,342,000    
Common stock shares restriction period         3 years    
Stock repurchase price, per share         $ 0.001    
ProstaGene, LLC | Investment Advisory, Management and Administrative Service              
Acquired Finite-Lived Intangible Assets [Line Items]              
Investment earned shares         1,620,000    
Patents              
Acquired Finite-Lived Intangible Assets [Line Items]              
Asset purchase, cash paid $ 3,500,000            
Estimated useful life of acquired asset         10 years