Restructuring and Other Charges (Changes in Restructuring Liability) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2015	Mar. 29, 2014
Restructuring Reserve [Roll Forward]
Restructuring and other charges	$ 4,354	$ 5,947
Restructuring Reserve	20,212
Employee Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring and other charges	951	1,368
Restructuring Reserve	782
Lease Termination Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring and other charges	311	1,283
Restructuring Reserve	1,407
Multi-Employer Pension Withdrawal Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring and other charges	172	748
Restructuring Reserve	18,023
Building Clean-up, Equipment Moving and Other Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring and other charges	888	$ 1,332
Restructuring Reserve	0
2015 Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	0
Restructuring and other charges	298
Payments for Restructuring	(257)
Restructuring Reserve	41
2015 Plan [Member] | Employee Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	0
Restructuring and other charges	298
Payments for Restructuring	(257)
Restructuring Reserve	41
2015 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
2015 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
2015 Plan [Member] | Building Clean-up, Equipment Moving and Other Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	0
Restructuring and other charges	0
Payments for Restructuring	0
Restructuring Reserve	0
2014 Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	1,506
Restructuring and other charges	1,244
Payments for Restructuring	(2,062)
Restructuring Reserve	688
2014 Plan [Member] | Employee Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	1,506
Restructuring and other charges	668
Payments for Restructuring	(1,486)
Restructuring Reserve	688
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
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
2014 Plan [Member] | Building Clean-up, Equipment Moving and Other Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	0
Restructuring and other charges	576
Payments for Restructuring	(576)
Restructuring Reserve	0
Residual Plans [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	19,431
Restructuring and other charges	232
Payments for Restructuring	(1,071)
Restructuring Reserve	18,592
Residual Plans [Member] | Employee Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	54
Restructuring and other charges	(54)
Payments for Restructuring	0
Restructuring Reserve	0
Residual Plans [Member] | Lease Termination Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	677
Restructuring and other charges	36
Payments for Restructuring	(144)
Restructuring Reserve	569
Residual Plans [Member] | Multi-Employer Pension Withdrawal Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	18,700
Restructuring and other charges	172
Payments for Restructuring	(849)
Restructuring Reserve	18,023
Residual Plans [Member] | Building Clean-up, Equipment Moving and Other Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	0
Restructuring and other charges	78
Payments for Restructuring	(78)
Restructuring Reserve	0
Acquisition Integration Plans [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	1,213
Restructuring and other charges	569
Payments for Restructuring	(891)
Restructuring Reserve	891
Acquisition Integration Plans [Member] | Employee Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	77
Restructuring and other charges	39
Payments for Restructuring	(63)
Restructuring Reserve	53
Acquisition Integration Plans [Member] | Lease Termination Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	1,136
Restructuring and other charges	275
Payments for Restructuring	(573)
Restructuring Reserve	838
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
Acquisition Integration Plans [Member] | Building Clean-up, Equipment Moving and Other Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	0
Restructuring and other charges	255
Payments for Restructuring	(255)
Restructuring Reserve	$ 0