Business Acquisitions, Goodwill and Intangible Assets (Details 6)	12 Months Ended
	Jan. 02, 2011 Y
Estimated remaining useful lives by asset category
Weighted average remaining useful life in years	5.3
Proprietary Technology [Member]
Estimated remaining useful lives by asset category
Weighted average remaining useful life in years	5.4
Customer List/Relationships [Member]
Estimated remaining useful lives by asset category
Weighted average remaining useful life in years	5.9
Patents [Member]
Estimated remaining useful lives by asset category
Weighted average remaining useful life in years	6.3
Backlog [Member]
Estimated remaining useful lives by asset category
Weighted average remaining useful life in years	1.0
Trademarks [Member]
Estimated remaining useful lives by asset category
Weighted average remaining useful life in years	9.7