Restructuring (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 03, 2016	Nov. 28, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring charge	$ 4,356	$ 5,629
Accrued Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Remaining severance and employee termination benefits	2,453	4,042
Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charge	4,315	1,047
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charge	$ 41	$ 4,582