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Stock-Based Compensation (Activity Stock Options and Stock Awards) (Details) - USD ($)
$ in Thousands
12 Months Ended
Nov. 30, 2018
Nov. 30, 2017
Nov. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total intrinsic value of stock options on date exercised $ 3,692 $ 1,622 $ 2,017
Total fair value of restricted stock units and deferred stock units on date vested 16,431 20,089 17,213
Deferred Stock Unit      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total fair value of restricted stock units and deferred stock units on date vested 1,690 57 0
Restricted Stock Units (RSUs)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total fair value of restricted stock units and deferred stock units on date vested $ 14,741 $ 20,032 $ 17,213