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Product Warranties (Changes In Product Warranty Liability) (Detail) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 28, 2012
Product Warranty Liability [Line Items]  
Balance as of fiscal year end 2011 $ 18,444
Accruals for warranties issued 14,783
Changes in estimates 427
Warranty settlements (in cash or in kind) (17,571)
Balance as of the third quarter of fiscal 2012 $ 16,083