Stock-Based Compensation (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Stock-Based Compensation Expense Allocation [Line Items]
Stock-based Compensation Expense	$ 7,505	$ 7,193	$ 14,095	$ 14,216
Cost of Goods Sold [Member]
Stock-Based Compensation Expense Allocation [Line Items]
Stock-based Compensation Expense	2,218	1,570	4,003	3,606
Research and Development Expense [Member]
Stock-Based Compensation Expense Allocation [Line Items]
Stock-based Compensation Expense	2,310	2,621	4,783	5,095
Selling, General And Administrative [Member]
Stock-Based Compensation Expense Allocation [Line Items]
Stock-based Compensation Expense	$ 2,977	$ 3,002	$ 5,309	$ 5,515