Income Taxes Components of Deferred Tax Assets and Liabilities (Details) (USD $)	Dec. 28, 2014	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Income Tax Contingency [Line Items]
Long-term deferred tax liabilities	$ 30,300,000	$ 45,300,000
Current deferred tax assets	62,000,000	78,300,000
Inventory	9,041,000	9,850,000
Reserves and accruals	30,641,000	30,269,000
Accrued compensation	22,915,000	15,920,000
Net operating loss and credit carryforwards	106,020,000	132,710,000
Accrued pension	44,342,000	23,353,000
Restructuring reserve	7,522,000	6,853,000
Deferred revenue	46,413,000	42,687,000
All other, net	824,000	1,666,000
Total deferred tax assets	267,718,000	263,308,000
Postretirement health benefits	(4,472,000)	(3,894,000)
Depreciation and amortization	(176,043,000)	(163,269,000)
Total deferred tax liabilities	(180,515,000)	(167,163,000)
Valuation allowance	(55,460,000)	(63,139,000)	(67,800,000)	(82,300,000)
Net deferred tax liabilities	31,743,000	33,006,000
Domestic Country [Member]
Income Tax Contingency [Line Items]
Net deferred tax liabilities	44,073,000	22,565,000
Foreign Tax Authority [Member]
Income Tax Contingency [Line Items]
Net deferred tax liabilities	$ (12,330,000)	$ 10,441,000