Quarterly report pursuant to Section 13 or 15(d)

Income (Loss) per Common Share - Additional Information (Detail)

v3.19.3
Income (Loss) per Common Share - Additional Information (Detail) - shares
3 Months Ended 9 Months Ended
Aug. 31, 2019
Aug. 31, 2019
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 43,636 154,601