Accounts Payable, Accrued Liabilities and Guarantees (Details 1) (USD $) In Thousands, unless otherwise specified	Mar. 02, 2013	Dec. 01, 2012
Accounts Payable and Accrued Liabilities [Line Items]
Accounts payable	$ 62,786	$ 69,206
Accrued salaries, wages and commissions	7,840	16,884
Pension and postretirement healthcare benefits liabilities	7,876	21,442
Compensated absences	8,225	9,010
Accrued insurance liabilities	8,274	7,733
Customer deposits	15,829	14,207
Other accrued liabilities	27,213	33,780
Accounts payable and accrued liabilities	138,043	172,262
Letters of Credit Outstanding, Amount	$ 29,021	$ 23,307