Restructuring (Details) (USD $)	3 Months Ended			9 Months Ended
	Sep. 29, 2013		Sep. 30, 2012	Sep. 29, 2013		Sep. 30, 2012
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1,114,000		$ 10,544,000	$ 1,705,000		$ 61,189,000
Restructuring Costs				1,110,000
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning of period	11,935,000			29,477,000
Payments				18,652,000
Restructuring liability, end of period	11,935,000			11,935,000
Restructuring and Related Cost, Cost Incurred to Date				123,931,000
October 2012 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	56,000		0	(777,000)		0
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Number of Positions Eliminated				900
Restructuring and Related Cost, Number of Positions Eliminated, Percent of Workforce				15.00%
Restructuring and Related Cost, Expected Percentage of Costs to be Settled With Cash				90.00%
Restructuring and Related Cost, Cost Incurred to Date				29,450,000
October 2012 Restructuring Plan [Member] | Minimum [Member]
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Expected Cost				30,000,000
October 2012 Restructuring Plan [Member] | Maximum [Member]
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Expected Cost				35,000,000
October 2012 Restructuring Plan [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	42,000		0	(1,779,000)		0
Restructuring Costs				(1,779,000)
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning of period				24,439,000
Payments				14,676,000
Restructuring liability, end of period	7,984,000			7,984,000
Restructuring and Related Cost, Cost Incurred to Date				27,274,000
October 2012 Restructuring Plan [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(162,000)		0	(89,000)		0
Restructuring Costs				(89,000)
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning of period				714,000
Payments				320,000
Restructuring liability, end of period	305,000			305,000
Restructuring and Related Cost, Cost Incurred to Date				625,000
October 2012 Restructuring Plan [Member] | Other Restructuring Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	176,000		0	1,091,000		0
Restructuring Costs				1,091,000	[1]
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning of period				358,000	[1]
Payments				1,343,000	[1]
Restructuring liability, end of period	106,000	[1]		106,000	[1]
Restructuring and Related Cost, Cost Incurred to Date				1,551,000
Legacy Restructuring Plans
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,058,000		10,544,000	2,482,000		61,189,000
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Cost Incurred to Date				94,481,000
Legacy Restructuring Plans | Non-cash Impairment Charges [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	595,000		9,965,000	595,000		53,371,000
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Cost Incurred to Date				60,748,000
Legacy Restructuring Plans | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	394,000		(110,000)	394,000		1,345,000
Restructuring Costs				394,000
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning of period				60,000
Payments				41,000
Restructuring liability, end of period	413,000			413,000
Restructuring and Related Cost, Cost Incurred to Date				20,230,000
Legacy Restructuring Plans | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	26,000		(1,481,000)	1,363,000		2,849,000
Restructuring Costs				1,363,000
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning of period				2,436,000
Payments				1,452,000
Restructuring liability, end of period	2,347,000			2,347,000
Restructuring and Related Cost, Cost Incurred to Date				5,569,000
Legacy Restructuring Plans | Other Restructuring Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	43,000		2,170,000	130,000		3,624,000
Restructuring Costs				130,000	[1]
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning of period				1,470,000	[1]
Payments				820,000	[1]
Restructuring liability, end of period	780,000	[1]		780,000	[1]
Restructuring and Related Cost, Cost Incurred to Date				$ 7,934,000

[1] Other costs primarily represent associated legal services.