Restructuring and Other Charges (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 28, 2012	Dec. 30, 2011
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 1,644	$ 720
Restructuring Reserve [Roll Forward]
Restructuring Reserve	1,728
Restructuring and other charges	1,644	720
Payments for Restructuring	(1,070)
Other	0
Restructuring Reserve	2,302
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	0
Restructuring Reserve [Roll Forward]
Restructuring Reserve	1,144
Restructuring and other charges	0
Payments for Restructuring	(48)
Other	(553)
Restructuring Reserve	543
license and software write-downs and other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	0
Restructuring Reserve [Roll Forward]
Restructuring Reserve	135
Restructuring and other charges	0
Payments for Restructuring	(77)
Other	0
Restructuring Reserve	58
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	1,644
Restructuring Reserve [Roll Forward]
Restructuring Reserve	449
Restructuring and other charges	1,644
Payments for Restructuring	(945)
Other	553
Restructuring Reserve	$ 1,701