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Basis of Presentation (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Mar. 30, 2013
Mar. 31, 2012
Mar. 30, 2013
Mar. 31, 2012
Basis of Presentation [Abstract]        
Amortization expense on capitalized computer software $ 0.7 $ 0.7 $ 1.4 $ 1.2
Life of warranty obligations, minimum (in months) 12 months   12 months  
Life of warranty obligations for sales, maximum (in months) 24 months   24 months  
Number of previous months historical warranty claims used to calculate warranty expense percentage (in months) 12 months   12 months