Restructuring and Other Charges (Changes in Restructuring Liability) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Restructuring Reserve [Roll Forward]
Restructuring and other charges	$ 5,571	$ 3,337	$ 18,856	$ 10,243
Restructuring Reserve	23,629		23,629
Employee Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring and other charges	2,848	1,807	7,076	5,560
Restructuring Reserve	2,346		2,346
Lease Termination Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring and other charges	323	368	2,049	929
Restructuring Reserve	1,917		1,917
Multi-employer Pension Withdrawal Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring and other charges	171	120	1,075	322
Restructuring Reserve	19,366		19,366
Building Clean-up, Equipment Moving and Other Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring and other charges	1,753	482	4,389	1,786
Restructuring Reserve	0		0
2014 Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			0
Restructuring and other charges			4,895
Payments for Restructuring			(3,019)
Restructuring Reserve	1,876		1,876
2014 Plan [Member] | Employee Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			0
Restructuring and other charges			4,656
Payments for Restructuring			(2,780)
Restructuring Reserve	1,876		1,876
2014 Plan [Member] | Lease Termination Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			0
Restructuring and other charges			0
Payments for Restructuring			0
Restructuring Reserve	0		0
2014 Plan [Member] | Multi-employer Pension Withdrawal Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			0
Restructuring and other charges			0
Payments for Restructuring			0
Restructuring Reserve	0		0
2014 Plan [Member] | Building Clean-up, Equipment Moving and Other Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			0
Restructuring and other charges			239
Payments for Restructuring			(239)
Restructuring Reserve	0		0
2013 Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			893
Restructuring and other charges			973
Payments for Restructuring			(1,727)
Restructuring Reserve	139		139
2013 Plan [Member] | Employee Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			837
Restructuring and other charges			325
Payments for Restructuring			(1,027)
Restructuring Reserve	135		135
2013 Plan [Member] | Lease Termination Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			56
Restructuring and other charges			178
Payments for Restructuring			(230)
Restructuring Reserve	4		4
2013 Plan [Member] | Multi-employer Pension Withdrawal Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			0
Restructuring and other charges			0
Payments for Restructuring			0
Restructuring Reserve	0		0
2013 Plan [Member] | Building Clean-up, Equipment Moving and Other Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			0
Restructuring and other charges			470
Payments for Restructuring			(470)
Restructuring Reserve	0		0
2012 Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			5,727
Restructuring and other charges			556
Payments for Restructuring			(414)
Restructuring Reserve	5,869		5,869
2012 Plan [Member] | Employee Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			0
Restructuring and other charges			0
Payments for Restructuring			0
Restructuring Reserve	0		0
2012 Plan [Member] | Lease Termination Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			327
Restructuring and other charges			(184)
Payments for Restructuring			(93)
Restructuring Reserve	50		50
2012 Plan [Member] | Multi-employer Pension Withdrawal Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			5,400
Restructuring and other charges			739
Payments for Restructuring			(320)
Restructuring Reserve	5,819		5,819
2012 Plan [Member] | Building Clean-up, Equipment Moving and Other Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			0
Restructuring and other charges			1
Payments for Restructuring			(1)
Restructuring Reserve	0		0
Residual Plans [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			16,172
Restructuring and other charges			1,200
Payments for Restructuring			(3,106)
Restructuring Reserve	14,266		14,266
Residual Plans [Member] | Employee Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			0
Restructuring and other charges			0
Payments for Restructuring			0
Restructuring Reserve	0		0
Residual Plans [Member] | Lease Termination Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			1,017
Restructuring and other charges			171
Payments for Restructuring			(469)
Restructuring Reserve	719		719
Residual Plans [Member] | Multi-employer Pension Withdrawal Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			15,155
Restructuring and other charges			336
Payments for Restructuring			(1,944)
Restructuring Reserve	13,547		13,547
Residual Plans [Member] | Building Clean-up, Equipment Moving and Other Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			0
Restructuring and other charges			693
Payments for Restructuring			(693)
Restructuring Reserve	0		0
Acquisition Integration Plans [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			2,658
Restructuring and other charges			9,786
Payments for Restructuring			(10,965)
Restructuring Reserve	1,479		1,479
Acquisition Integration Plans [Member] | Employee Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			155
Restructuring and other charges			2,095
Payments for Restructuring			(1,915)
Restructuring Reserve	335		335
Acquisition Integration Plans [Member] | Lease Termination Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			2,503
Restructuring and other charges			1,884
Payments for Restructuring			(3,243)
Restructuring Reserve	1,144		1,144
Acquisition Integration Plans [Member] | Multi-employer Pension Withdrawal Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			0
Restructuring and other charges			0
Payments for Restructuring			0
Restructuring Reserve	0		0
Acquisition Integration Plans [Member] | Building Clean-up, Equipment Moving and Other Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			0
Restructuring and other charges			5,807
Payments for Restructuring			(5,807)
Restructuring Reserve	$ 0		$ 0