Income Taxes (Details 1) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	May 31, 2014	Jun. 01, 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	158	151
Reductions for prior period tax positions	0	0
Reductions for lapse of statue of limitations / settlements	0	(334)
Changes in interest and penalties	72	(213)
Unrecognized tax benefits at end of period	$ 2,385	$ 1,813