Supplemental Balance Sheet Information (Long-lived Assets) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Dec. 29, 2012
Net property, plant and equipment
Gross property, plant and equipment	$ 1,328,554		$ 1,313,009
Less accumulated depreciation	(637,829)		(595,989)
Net property, plant and equipment	690,725		717,020
Depreciation expense	54,444	47,181
Land [Member]
Net property, plant and equipment
Gross property, plant and equipment	40,638		40,812
Buildings [Member]
Net property, plant and equipment
Gross property, plant and equipment	704,262		697,547
Machinery and Equipment [Member]
Net property, plant and equipment
Gross property, plant and equipment	373,431		356,960
Leashold Improvements [Member]
Net property, plant and equipment
Gross property, plant and equipment	36,907		34,916
Furniture and Fixtures [Member]
Net property, plant and equipment
Gross property, plant and equipment	24,867		25,681
Vehicles [Member]
Net property, plant and equipment
Gross property, plant and equipment	4,028		3,736
Computer Hardware and Software [Member]
Net property, plant and equipment
Gross property, plant and equipment	111,025		107,171
Construction in Progress [Member]
Net property, plant and equipment
Gross property, plant and equipment	$ 33,396		$ 46,186