Note 7 Restructuring Reserve Rollforward (Details) (USD $)	3 Months Ended		6 Months Ended
	Mar. 30, 2013	Mar. 31, 2012	Mar. 30, 2013	Mar. 31, 2012
Restructuring Reserve Rollforward
Accrual balance, beginning			$ 14,992,000
Restructuring charges			10,872,000
Total charges utilized or payments			(16,120,000)
Accrual balance, ending	9,744,000		9,744,000
Employee Severance and benefits[Member]
Restructuring Reserve Rollforward
Restructuring charges			2,010,000
Charges utilized			(7,027,000)
Leases and facility shutdown costs[Member]
Restructuring Reserve Rollforward
Restructuring charges			6,384,000
Charges utilized			(6,615,000)
Non-cash charges[Member]
Restructuring Reserve Rollforward
Restructuring charges			2,478,000
Non-cash charges			(2,478,000)
2012 Restructuring Plan
Restructuring Reserve Rollforward
Accrual balance, beginning			10,301,000
Restructuring charges			5,519,000
Total charges utilized or payments			(10,301,000)
Accrual balance, ending	5,519,000		5,519,000
Restructuring and Related Activities [Abstract]
Expected Cost			26,000,000
Expected Completion Date			Sep. 28, 2013
2012 Restructuring Plan | Employee Severance and benefits[Member]
Restructuring Reserve Rollforward
Restructuring charges	1,000,000		1,830,000
Charges utilized			(6,628,000)
Restructuring and Related Activities [Abstract]
Cost Incurred to Date			13,400,000
Number of Positions Eliminated			2,150
2012 Restructuring Plan | Leases and facility shutdown costs[Member]
Restructuring Reserve Rollforward
Restructuring charges	1,500,000		2,009,000
Charges utilized			(1,993,000)
Restructuring and Related Activities [Abstract]
Cost Incurred to Date			3,200,000
2012 Restructuring Plan | Asset impairment [Member]
Restructuring Reserve Rollforward
Restructuring charges	1,000,000
Restructuring and Related Activities [Abstract]
Cost Incurred to Date			4,500,000
2012 Restructuring Plan | Non-cash charges[Member]
Restructuring Reserve Rollforward
Restructuring charges			1,680,000
Non-cash charges			(1,680,000)
Prior to 2012 Restructuring Plan
Restructuring Reserve Rollforward
Accrual balance, beginning			4,691,000
Restructuring charges			5,353,000
Total charges utilized or payments			(5,819,000)
Accrual balance, ending	4,225,000		4,225,000
Prior to 2012 Restructuring Plan | Employee Severance and benefits[Member]
Restructuring Reserve Rollforward
Restructuring charges	0		180,000
Charges utilized			(399,000)
Prior to 2012 Restructuring Plan | Leases and facility shutdown costs[Member]
Restructuring Reserve Rollforward
Restructuring charges	3,400,000		4,375,000
Charges utilized			(4,622,000)
Prior to 2012 Restructuring Plan | Asset impairment [Member]
Restructuring Reserve Rollforward
Restructuring charges	0
Prior to 2012 Restructuring Plan | Non-cash charges[Member]
Restructuring Reserve Rollforward
Restructuring charges			798,000
Non-cash charges			(798,000)
IMS
Restructuring Reserve Rollforward
Restructuring charges	$ 2,600,000	$ 4,300,000	$ 4,200,000	$ 7,200,000