Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.2
Stockholders' Equity - Fair Value of Options Granted (Detail) - Service-Based Vesting Condition Options [Member]
 3 Months Ended 6 Months Ended
May 31, 2019
May 31, 2018
May 31, 2019
May 31, 2018
Weighted average values:        
Expected life 5 years 5 years 5 years 5 years
Measurement Input, Expected Dividend Rate [Member]        
Weighted average values:        
Expected dividends 0 0 0 0
Measurement Input, Price Volatility [Member]        
Weighted average values:        
Expected dividends 51.2 50.8 51.2 50.8
Measurement Input, Risk Free Interest Rate [Member]        
Weighted average values:        
Expected dividends 2.31 2.67 2.31 2.67