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Income Taxes (Reconciliation Of Unrecognized Tax Benefits) (Details) - USD ($)
$ in Thousands
12 Months Ended
Nov. 30, 2018
Nov. 30, 2017
Nov. 30, 2016
Reconciliation of Unrecognized Tax Benefits [Roll Forward]      
Balance, beginning of year $ 7,520 $ 7,046 $ 4,779
Tax positions related to current year 0 785 1,106
Tax positions related to a prior period (15) (120)  
Tax positions related to a prior period     1,638
Settlements with tax authorities (39) (155) (21)
Lapses due to expiration of the statute of limitations (1,679) (36) (456)
Balance, end of year $ 5,787 $ 7,520 $ 7,046