Accounts Payable and Accrued Liabilities (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 01, 2012	Dec. 03, 2011	Nov. 27, 2010
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Warranty accrual at beginning of period	$ 2,580	$ 3,499	$ 3,989
Accruals for warranties issued during the period	514	622	825
Adjustments related to business acquisitions	32	0	0
Adjustments related to pre-existing warranties	(691)	(846)	(308)
Settlements made during the period	(850)	(316)	(856)
Other adjustments, including currency translation	(52)	(379)	(151)
Warranty accrual at end of period	$ 1,533	$ 2,580	$ 3,499

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Total liability for standard and extended product warranties acquired in a business acquisition.

+ References

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-Name Accounting Standards Codification

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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

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

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

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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).

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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.

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