Fair Value of Financial Instruments (Details 3) (Contingent consideration, Monte Carlo simulation)	9 Months Ended
	Sep. 27, 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)	35.60%
Expected term	3 months 18 days
Estimated discount rate (as a percent)	0.10%
High end of range
Quantitative information for Level 3 fair value measurements liabilities
Expected revenue growth rate (as a percent)	69.10%
Expected term	4 years 3 months 18 days
Estimated discount rate (as a percent)	1.80%