Accrued Liabilities (Schedule of Accrued Liabilities) (Details) - USD ($) $ in Thousands	Nov. 28, 2015	Nov. 29, 2014	Nov. 30, 2013	Dec. 01, 2012
Payables and Accruals [Abstract]
Accrued salaries, wages and commissions	$ 16,498	$ 29,621
Pension and postretirement healthcare benefits liabilities	204	279
Compensated absences	8,672	9,967
Accrued insurance liabilities	9,928	11,358
Warranties	7,870	9,405	$ 1,599	$ 1,533
Customer deposits	25,036	23,045
Other accrued liabilities	38,202	36,361
Accrued liabilities	$ 106,410	$ 120,036