Restructuring and Other Charges (Changes in Restructuring Liability) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Sep. 26, 2015	Oct. 01, 2016	Sep. 26, 2015
Restructuring Reserve [Roll Forward]
Restructuring and other charges	$ 2,414	$ 5,483	$ 8,284	$ 11,529
Restructuring Reserve	20,222		20,222
Employee Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring and other charges	1,983	723	2,949	2,358
Restructuring Reserve	1,894		1,894
Lease Termination Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring and other charges	0	36	158	391
Restructuring Reserve	0		0
Multi-Employer Pension Withdrawal Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring and other charges	203	4,204	769	4,574
Restructuring Reserve	18,069		18,069
Building Clean-up, Equipment Moving and Other Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring and other charges	206	$ 395	1,664	$ 1,925
Restructuring Reserve	259		259
2016 Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			0
Restructuring and other charges			2,530
Payments for Restructuring			(933)
Restructuring Reserve	1,597		1,597
2016 Plan [Member] | Employee Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			0
Restructuring and other charges			2,434
Payments for Restructuring			(837)
Restructuring Reserve	1,597		1,597
2016 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
2016 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
2016 Plan [Member] | Building Clean-up, Equipment Moving and Other Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			0
Restructuring and other charges			96
Payments for Restructuring			(96)
Restructuring Reserve	0		0
2015 Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			276
Restructuring and other charges			1,875
Payments for Restructuring			(1,595)
Restructuring Reserve	556		556
2015 Plan [Member] | Employee Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			276
Restructuring and other charges			514
Payments for Restructuring			(493)
Restructuring Reserve	297		297
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		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		0
2015 Plan [Member] | Building Clean-up, Equipment Moving and Other Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			0
Restructuring and other charges			1,361
Payments for Restructuring			(1,102)
Restructuring Reserve	259		259
Residual Plans [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			20,256
Restructuring and other charges			975
Payments for Restructuring			(3,162)
Restructuring Reserve	18,069		18,069
Residual Plans [Member] | Employee Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			3
Restructuring and other charges			1
Payments for Restructuring			(4)
Restructuring Reserve	0		0
Residual Plans [Member] | Lease Termination Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			411
Restructuring and other charges			113
Payments for Restructuring			(524)
Restructuring Reserve	0		0
Residual Plans [Member] | Multi-Employer Pension Withdrawal Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			19,842
Restructuring and other charges			769
Payments for Restructuring			(2,542)
Restructuring Reserve	18,069		18,069
Residual Plans [Member] | Building Clean-up, Equipment Moving and Other Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			0
Restructuring and other charges			92
Payments for Restructuring			(92)
Restructuring Reserve	0		0
Acquisition Integration Plans [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			392
Restructuring and other charges			458
Payments for Restructuring			(850)
Restructuring Reserve	0		0
Acquisition Integration 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
Acquisition Integration Plans [Member] | Lease Termination Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			392
Restructuring and other charges			45
Payments for Restructuring			(437)
Restructuring Reserve	0		0
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			413
Payments for Restructuring			(413)
Restructuring Reserve	$ 0		$ 0