Commitments and Contingencies (Details) (USD $)	6 Months Ended		36 Months Ended
	May 31, 2014	Jun. 01, 2013	Nov. 30, 2013
Product Liability Contingency [Line Items]
Lawsuits and claims settled	4	0	22
Settlement amounts	$ 178,000	$ 0	$ 1,448,000
Insurance Payments Received Or Expected To Be Received	$ 155,000	$ 0	$ 1,087,000