Fair Value of Financial Instruments (Details 3) (Contingent consideration, Monte Carlo simulation)	6 Months Ended
	Jun. 28, 2014
Quantitative information for Level 3 fair value measurements liabilities
Expected revenue volatility (as a percent)	20.00%
Low end of range
Quantitative information for Level 3 fair value measurements liabilities
Expected revenue growth rate (as a percent)	19.70%
Expected term	6 months
Estimated discount rate (as a percent)	0.00%
High end of range
Quantitative information for Level 3 fair value measurements liabilities
Expected revenue growth rate (as a percent)	40.90%
Expected term	4 years 6 months
Estimated discount rate (as a percent)	1.70%