Business Acquisitions, Goodwill and Acquired Intangible Assets (Remaining Useful Life) (Details)	12 Months Ended
	Dec. 28, 2014
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average remaining useful life in years	5 years 6 months 6 days
Proprietary technology
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average remaining useful life in years	5 years 2 months 6 days
Customer list/relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average remaining useful life in years	6 years 0 months 6 days
Patents
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average remaining useful life in years	6 years 1 month 6 days
Backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average remaining useful life in years	3 months 6 days
Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average remaining useful life in years	6 years 9 months 6 days