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Income Taxes (Details 1) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Aug. 30, 2014
Aug. 31, 2013
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]    
Unrecognized tax benefits at beginning of year $ 2,155 $ 2,209
Additions for current period tax positions 237 348
Reductions for prior period tax positions 0 0
Reductions for lapse of statue of limitations / settlements (22) (334)
Changes in interest and penalties 53 (226)
Unrecognized tax benefits at end of period $ 2,423 $ 1,997