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Product Warranties - Product Warranty (Detail) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Mar. 29, 2014
Mar. 30, 2013
Guarantees [Abstract]    
Balance at Beginning of Period $ 9,258 $ 6,179
Provisions 4,320 5,328
Settlements/ Adjustments (5,058) (4,965)
Balance at End of Period $ 8,520 $ 6,542