Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Fair Value of Options Granted (Detail)

v3.19.3.a.u2
Stockholders' Equity - Fair Value of Options Granted (Detail) - Service-Based Vesting Condition Options [Member]
 12 Months Ended
Nov. 30, 2019
Nov. 30, 2018
Weighted average values:    
Expected life 8 years 4 months 24 days 5 years
Measurement Input, Expected Dividend Rate [Member]    
Weighted average values:    
Expected dividends 0 0
Measurement Input, Price Volatility [Member]    
Weighted average values:    
Expected dividends 64.02 50.85
Measurement Input, Risk Free Interest Rate [Member]    
Weighted average values:    
Expected dividends 1.55 2.67