Quarterly report pursuant to Section 13 or 15(d)

Income per Common Share - Additional Information (Detail)

v3.21.2
Income per Common Share - Additional Information (Detail) - shares
3 Months Ended 6 Months Ended
May 31, 2021
May 31, 2020
May 31, 2021
May 31, 2020
Employee Stock Incentive Plan [Member]        
Earnings Per Share Basic And Diluted [Line Items]        
Number of outstanding options excluded from computation of diluted earnings per share 20,000 238,681 27,000 238,681