Accounts Payable and Accrued Liabilities (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 03, 2011	Nov. 27, 2010
Accounts Payable and Accrued Liabilities [Line Items]
Accounts payable	$ 64,701	$ 64,630
Accrued salaries, wages and commissions	24,760	31,497
Compensated absences	8,530	8,172
Accrued insurance liabilities	9,017	11,473
Customer deposits	8,727	7,732
Other accrued liabilities	39,850	36,702
Accounts payable and accrued liabilities	$ 155,585	$ 160,206