Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.2
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, 2020
May 31, 2019
Weighted average values:      
Expected life 5 years 9 years 5 years
Measurement Input, Expected Dividend Rate [Member]      
Weighted average values:      
Expected weighted average 0 0 0
Measurement Input, Price Volatility [Member]      
Weighted average values:      
Expected weighted average 0.512 0.6425 0.512
Measurement Input, Risk Free Interest Rate [Member]      
Weighted average values:      
Expected weighted average 0.0231 0.0190 0.0231