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Composition Of Certain Financial Statement Captions (Schedule Of Property, Plant And Equipment) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 30, 2012
Sep. 30, 2011
Composition Of Certain Financial Statement Captions [Abstract]    
Land $ 12,844 $ 12,778
Buildings 26,804 26,623
Leasehold improvements 59,242 44,021
Machinery and equipment 24,131 20,845
Computer systems and software 80,882 71,220
Furniture and fixtures 12,408 10,537
Products provided under operating leases 0 1,060
Property, plant and equipment, gross 216,311 187,084
Less: accumulated depreciation (80,794) (69,977)
Property, plant and equipment, net $ 135,517 $ 117,107