Fair Value of Financial Instruments (Details 3) (Contingent consideration, Monte Carlo simulation)	3 Months Ended
	Mar. 29, 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)	26.20%
Expected term	9 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)	44.40%
Expected term	4 years 9 months 18 days
Estimated discount rate (as a percent)	1.50%