Quarterly report pursuant to Section 13 or 15(d)

Income per Common Share - Additional Information (Detail)

v3.5.0.2
Income per Common Share - Additional Information (Detail) - shares
3 Months Ended 6 Months Ended
May 31, 2016
May 31, 2015
May 31, 2016
May 31, 2015
Employee Stock Incentive Plan [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Number of outstanding options excluded from computation of diluted earnings per share 40,000 271,000 40,000 271,000