Restructuring and Other Charges (Changes in Restructuring Liability) (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Restructuring Reserve [Roll Forward]
Restructuring and other charges	$ 8,180	$ 4,990
Restructuring Reserve	24,117
Employee Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring and other charges	1,096	666
Restructuring Reserve	2,591
Lease Termination Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring and other charges	54	40
Restructuring Reserve	0
Multi-Employer Pension Withdrawal Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring and other charges	5,195	269
Restructuring Reserve	21,466
Building Clean-up, Equipment Moving and Other Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring and other charges	530	$ 1,439
Restructuring Reserve	60
2017 Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	2,000
Restructuring and other charges	6,880
Payments for Restructuring	(1,601)
Restructuring Reserve	7,279
2017 Plan [Member] | Employee Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	2,000
Restructuring and other charges	1,342
Payments for Restructuring	(996)
Restructuring Reserve	2,346
2017 Plan [Member] | Lease Termination Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	0
Restructuring and other charges	36
Payments for Restructuring	(36)
Restructuring Reserve	0
2017 Plan [Member] | Multi-Employer Pension Withdrawal Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	0
Restructuring and other charges	4,933
Payments for Restructuring	0
Restructuring Reserve	4,933
2017 Plan [Member] | Building Clean-up, Equipment Moving and Other Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	0
Restructuring and other charges	569
Payments for Restructuring	(569)
Restructuring Reserve	0
2016 Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	844
Restructuring and other charges	85
Payments for Restructuring	(698)
Restructuring Reserve	231
2016 Plan [Member] | Employee Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	844
Restructuring and other charges	(50)
Payments for Restructuring	(563)
Restructuring Reserve	231
2016 Plan [Member] | Lease Termination Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	0
Restructuring and other charges	18
Payments for Restructuring	(18)
Restructuring Reserve	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
2016 Plan [Member] | Building Clean-up, Equipment Moving and Other Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	0
Restructuring and other charges	117
Payments for Restructuring	(117)
Restructuring Reserve	0
Residual Plans [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	18,088
Restructuring and other charges	99
Payments for Restructuring	(1,580)
Restructuring Reserve	16,607
Residual Plans [Member] | Employee Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	247
Restructuring and other charges	(196)
Payments for Restructuring	(37)
Restructuring Reserve	14
Residual Plans [Member] | Lease Termination Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	0
Restructuring and other charges	0
Payments for Restructuring	0
Restructuring Reserve	0
Residual Plans [Member] | Multi-Employer Pension Withdrawal Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	17,482
Restructuring and other charges	262
Payments for Restructuring	(1,211)
Restructuring Reserve	16,533
Residual Plans [Member] | Building Clean-up, Equipment Moving and Other Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	359
Restructuring and other charges	33
Payments for Restructuring	(332)
Restructuring Reserve	$ 60