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Incentive Plans and Stock-Based Compensation (Summary of Restricted Stock Units with Performance Conditions Expense) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 03, 2016
Nov. 28, 2015
Nov. 29, 2014
Restricted Stock Units (RSUs) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Pre-tax compensation expense $ 1,969 $ 2,530 $ 1,373
Deferred tax benefits (714) (885) (501)
Fair value of restricted stock unit awards on date of grant 2,954 3,208 1,524
Fair value of restricted stock unit awards vested 1,696 1,530 893
Restricted Stock Unit Awards with Performance Conditions [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Pre-tax compensation expense 0 0 0
Deferred tax benefits 0 0 0
Excess tax benefits associated with tax deductions over the amount of compensation expense recognized in the consolidated financial statements 0 0 0
Fair value of restricted stock unit awards on date of grant 0 5,857 0
Fair value of restricted stock unit awards vested $ 0 $ 0 $ 0