Goodwill and Other Intangible Assets Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 03, 2016	Mar. 29, 2015
Finite-Lived Intangible Assets [Line Items]
Total amortization expense	$ 3,609	$ 2,563
Patents, Trademarks and Other
Finite-Lived Intangible Assets [Line Items]
Total amortization expense	980	1,011
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Total amortization expense	843	639
Developed Technology
Finite-Lived Intangible Assets [Line Items]
Total amortization expense	1,710	853
In-Process Research and Development
Finite-Lived Intangible Assets [Line Items]
Total amortization expense	$ 76	$ 60