Business Acquisitions (Schedule of Estimated Purchase Price Allocation) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 28, 2012 Business Acquisition, Acquiree - Duarte Business [Member]
Accounts receivable		$ 15,916
Inventories		30,149
Other current assets		10,369
Property, plant, and equipment		14,647
Goodwill		87,719
Intangible assets		79,300
Other noncurrent assets		18,097
Total assets acquired		256,197
Other current liabilities		28,739
Other noncurrent liabilities		28,598
Total liabilities assumed		57,337
Net assets acquired		198,860
Business Acquisition, Purchase Price Allocation, Warranty Liability	$ 157