Business Acquisitions Finite Lived Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 28, 2013
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Asset, Amount	$ 16,281
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Asset, Amount	14,292
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	11 years 8 months 12 days
Royalty Agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Asset, Amount	1,829
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	1 year 3 months 18 days
Noncompete Agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Asset, Amount	$ 160
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	2 years 9 months 18 days