Supplemental Financial Statement Information (Details 2) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 02, 2013	Mar. 03, 2012	Dec. 01, 2012
Supplemental Cash Flow Information
Increase (decrease) in value of available-for-sale securities: Investment in Centaur Media Plc	$ 59	$ 514
Shares of Centaur Media common stock sold	1,324,688
Additions to real estate assets included in accounts payable and accrued liabilities	425	942
Increase (decrease) in accounts payable and accrued liabilities related to additions to real estate assets	(517)	965
Dividend payable included in accrued liabilities			1,028
Interest paid
Interest payments, net of capitalized interest	1,189	965
Income Taxes
Effective income tax rate (as a percent)	33.00%	36.20%
Deferred tax assets, current	525
Deferred tax assets, noncurrent	$ 1,662