Stock Plans and Stock-Based Compensation (Stock Based Compensation Expense) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Stock-based compensation expense
Stock-based compensation expense	$ 6,047	$ 5,241	$ 18,232	$ 15,828
Provision for income taxes	(2,103)	(1,847)	(6,422)	(5,615)
Net income attributable to common shareowners	3,944	3,394	11,810	10,213
Cost of Sales [Member]
Stock-based compensation expense
Stock-based compensation expense	1,332	1,271	4,051	3,995
General and Administrative Expense [Member]
Stock-based compensation expense
Stock-based compensation expense	4,715	3,970	14,181	11,833
Performance Based Stock Award Program [Member]
Stock-based compensation expense
Stock-based compensation expense			$ 1,455