Fair Value Measurements (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended																															0 Months Ended
	Mar. 01, 2014	Nov. 30, 2013	Mar. 01, 2014 Mutual fund investments - equities [Member]	Nov. 30, 2013 Mutual fund investments - equities [Member]	Mar. 01, 2014 Mutual fund investments - bonds [Member]	Nov. 30, 2013 Mutual fund investments - bonds [Member]	Mar. 01, 2014 Cash and Cash Equivalents [Member]	Nov. 30, 2013 Cash and Cash Equivalents [Member]	Mar. 01, 2014 Level 1 [Member]	Nov. 30, 2013 Level 1 [Member]	Mar. 01, 2014 Level 1 [Member] Mutual fund investments - equities [Member]	Nov. 30, 2013 Level 1 [Member] Mutual fund investments - equities [Member]	Mar. 01, 2014 Level 1 [Member] Mutual fund investments - bonds [Member]	Nov. 30, 2013 Level 1 [Member] Mutual fund investments - bonds [Member]	Mar. 01, 2014 Level 1 [Member] Cash and Cash Equivalents [Member]	Nov. 30, 2013 Level 1 [Member] Cash and Cash Equivalents [Member]	Mar. 01, 2014 Level 2 [Member]	Nov. 30, 2013 Level 2 [Member]	Mar. 01, 2014 Level 2 [Member] Mutual fund investments - equities [Member]	Nov. 30, 2013 Level 2 [Member] Mutual fund investments - equities [Member]	Mar. 01, 2014 Level 2 [Member] Mutual fund investments - bonds [Member]	Nov. 30, 2013 Level 2 [Member] Mutual fund investments - bonds [Member]	Mar. 01, 2014 Level 2 [Member] Cash and Cash Equivalents [Member]	Nov. 30, 2013 Level 2 [Member] Cash and Cash Equivalents [Member]	Mar. 01, 2014 Level 3 [Member]	Nov. 30, 2013 Level 3 [Member]	Mar. 01, 2014 Level 3 [Member] Mutual fund investments - equities [Member]	Nov. 30, 2013 Level 3 [Member] Mutual fund investments - equities [Member]	Mar. 01, 2014 Level 3 [Member] Mutual fund investments - bonds [Member]	Nov. 30, 2013 Level 3 [Member] Mutual fund investments - bonds [Member]	Mar. 01, 2014 Level 3 [Member] Cash and Cash Equivalents [Member]	Nov. 30, 2013 Level 3 [Member] Cash and Cash Equivalents [Member]	Dec. 29, 2010 TransWeb [Member]	Mar. 01, 2014 Estimate of Fair Value Measurement [Member]	Nov. 30, 2013 Estimate of Fair Value Measurement [Member]	Mar. 01, 2014 Reported Value Measurement [Member]	Nov. 30, 2013 Reported Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted trust, included in Other noncurrent assets	$ 969	$ 1,024	$ 544	$ 593	$ 395	$ 400	$ 30	$ 31	$ 969	$ 1,024	$ 544	$ 593	$ 395	$ 400	$ 30	$ 31	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0
Contingent earn-out, included in Other long-term liabilities																																	1,018
Discount rate																																	13.20%
Change in fair value of TransWeb contingent earn-out	0	0
Long-term debt, fair value																																		$ 95,943	$ 166,288	$ 96,616	$ 166,636