Restructuring (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
	Oct. 04, 2013	Sep. 28, 2012	Oct. 04, 2013	Sep. 28, 2012
Restructuring and related costs	$ 9,067,000	$ 44,000	$ 28,694,000	$ 9,838,000
Restructuring and Related Cost, Number of Positions Eliminated, Period Percent			18.00%
Restructuring activity from the February 2013 plan [member]
Restructuring and related costs			19,900,000
Restructuring activity from the October 2013 plan [Member]
Restructuring and Related Cost, Number of Positions Eliminated			17
Restructuring and Related Cost, Expected Cost			500,000
Restructuring activity from the July 2013 plan [Member]
Restructuring and Related Cost, Number of Positions Eliminated			150
Restructuring and related costs			8,700,000
Restructuring activity from plans initiated in 2012 [Member]
Restructuring and Related Cost, Expected Cost			$ 0