Restructuring and Other Charges (Changes in Restructuring Liability) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Restructuring Reserve [Roll Forward]
Restructuring and other charges	$ 7,338	$ 2,724	$ 13,285	$ 6,906
Restructuring Reserve	25,409		25,409
Employee Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring and other charges	2,860	575	4,228	3,753
Restructuring Reserve	1,059		1,059
Lease Termination Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring and other charges	443	461	1,726	561
Restructuring Reserve	4,307		4,307
Multi-employer Pension Withdrawal Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring and other charges	156	123	904	202
Restructuring Reserve	20,043		20,043
Building Clean-up, Equipment Moving and Other Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring and other charges	1,304	932	2,636	1,304
Restructuring Reserve	0		0
2014 Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			0
Restructuring and other charges			2,325
Payments for Restructuring			(2,152)
Restructuring Reserve	173		173
2014 Plan [Member] | Employee Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			0
Restructuring and other charges			2,178
Payments for Restructuring			(2,005)
Restructuring Reserve	173		173
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			147
Payments for Restructuring			(147)
Restructuring Reserve	0		0
2013 Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			893
Restructuring and other charges			926
Payments for Restructuring			(1,448)
Restructuring Reserve	371		371
2013 Plan [Member] | Employee Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			837
Restructuring and other charges			325
Payments for Restructuring			(929)
Restructuring Reserve	233		233
2013 Plan [Member] | Lease Termination Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			56
Restructuring and other charges			207
Payments for Restructuring			(125)
Restructuring Reserve	138		138
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			394
Payments for Restructuring			(394)
Restructuring Reserve	0		0
2012 Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			5,727
Restructuring and other charges			544
Payments for Restructuring			(223)
Restructuring Reserve	6,048		6,048
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			(189)
Payments for Restructuring			(62)
Restructuring Reserve	76		76
2012 Plan [Member] | Multi-employer Pension Withdrawal Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			5,400
Restructuring and other charges			732
Payments for Restructuring			(160)
Restructuring Reserve	5,972		5,972
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			899
Payments for Restructuring			(2,028)
Restructuring Reserve	15,043		15,043
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			104
Payments for Restructuring			(149)
Restructuring Reserve	972		972
Residual Plans [Member] | Multi-employer Pension Withdrawal Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			15,155
Restructuring and other charges			172
Payments for Restructuring			(1,256)
Restructuring Reserve	14,071		14,071
Residual Plans [Member] | Building Clean-up, Equipment Moving and Other Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			0
Restructuring and other charges			623
Payments for Restructuring			(623)
Restructuring Reserve	0		0
Acquisition Integration Plans [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			2,658
Restructuring and other charges			6,418
Payments for Restructuring			(5,302)
Restructuring Reserve	3,774		3,774
Acquisition Integration Plans [Member] | Employee Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			155
Restructuring and other charges			1,725
Payments for Restructuring			(1,227)
Restructuring Reserve	653		653
Acquisition Integration Plans [Member] | Lease Termination Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			2,503
Restructuring and other charges			1,604
Payments for Restructuring			(986)
Restructuring Reserve	3,121		3,121
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			3,089
Payments for Restructuring			(3,089)
Restructuring Reserve	$ 0		$ 0