Accounts Payable and Accrued Liabilities (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 03, 2011	Nov. 27, 2010	Nov. 28, 2009
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Warranty accrual at beginning of period	$ 3,499	$ 3,989	$ 2,494
Accruals for warranties issued during the period	622	825	2,324
Adjustments related to pre-existing warranties	(846)	(308)	39
Settlements made during the period	(316)	(856)	(965)
Other adjustments, including currency translation	(379)	(151)	97
Warranty accrual at end of period	$ 2,580	$ 3,499	$ 3,989

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.20)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

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-Section 25

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-URI http://asc.fasb.org/extlink&oid=6397716&loc=d3e11281-110244

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 9

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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-Paragraph 20

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Total Increase or Decrease in the standard and extended product warranty liability due to currency translation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

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- Definition

Represents the aggregate decrease in the liability related to payments to satisfy claims for standard and extended product warranties.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

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-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

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Represents the aggregate Increase or Decrease in the liability during the reporting period for accruals related to preexisting standard and extended product warranties (including adjustments for changes in estimates).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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Represents the aggregate increase in the liability for accruals related to standard and extended product warranties issued during the reporting period.

+ References

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