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Employee Benefit Plans - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended
Feb. 28, 2021
Feb. 29, 2020
Nov. 30, 2020
Compensation And Retirement Disclosure [Abstract]      
Employer contribution to defined contribution plan $ 1,035 $ 944  
Deferred compensation liability 4,662   $ 4,628
Defined benefit and postemployment plans,net periodic pension costs 132 117  
Defined benefit and postemployment plans, contributions 0 $ 0  
Unfunded liabilities related to defined pension and postemployment plans $ (1,239)   $ (1,328)