Fair Value Measurements (Fair Value Measurements) (Details) $ in Thousands	Dec. 29, 2010 USD ($) owner	Nov. 28, 2015 USD ($)	Nov. 29, 2014 USD ($)
TransWeb [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Filter Resources contingent earn-out, included in Accrued liabilities	$ 1,018	$ 0	$ 0
Number of former owners | owner	1
Prepaid Expenses and Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign exchange contracts		418	362
Accrued Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign exchange contracts		40	367
Mutual fund investments - equities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted trust, included in Other noncurrent assets		352	437
Mutual fund investments - bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted trust, included in Other noncurrent assets		363	442
Cash and equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted trust, included in Other noncurrent assets		14	14
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted trust, included in Other noncurrent assets		729	893
Level 1 [Member] | Prepaid Expenses and Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign exchange contracts		0	0
Level 1 [Member] | Accrued Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Filter Resources contingent earn-out, included in Accrued liabilities		0
Level 1 [Member] | Mutual fund investments - equities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted trust, included in Other noncurrent assets		352	437
Level 1 [Member] | Mutual fund investments - bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted trust, included in Other noncurrent assets		363	442
Level 1 [Member] | Cash and equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted trust, included in Other noncurrent assets		14	14
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted trust, included in Other noncurrent assets		0	0
Level 2 [Member] | Prepaid Expenses and Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign exchange contracts		418	362
Level 2 [Member] | Accrued Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Filter Resources contingent earn-out, included in Accrued liabilities		0
Foreign exchange contracts		40	367
Level 2 [Member] | Mutual fund investments - equities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted trust, included in Other noncurrent assets		0	0
Level 2 [Member] | Mutual fund investments - bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted trust, included in Other noncurrent assets		0	0
Level 2 [Member] | Cash and equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted trust, included in Other noncurrent assets		0	0
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted trust, included in Other noncurrent assets		0	0
Level 3 [Member] | Prepaid Expenses and Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign exchange contracts		0	0
Level 3 [Member] | Accrued Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Filter Resources contingent earn-out, included in Accrued liabilities		1,285
Level 3 [Member] | Mutual fund investments - equities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted trust, included in Other noncurrent assets		0	0
Level 3 [Member] | Mutual fund investments - bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted trust, included in Other noncurrent assets		0	0
Level 3 [Member] | Cash and equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted trust, included in Other noncurrent assets		$ 0	$ 0