Shareholders' Equity (Summary Of Stock-Based Compensation Expense, Net Of Tax) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2013	Jun. 29, 2012	Jun. 28, 2013	Jun. 29, 2012
Stockholders Equity [Line Items]
Total stock-based compensation expense	$ 8,435	$ 8,155	$ 17,253	$ 15,944
Cost Of Sales [Member]
Stockholders Equity [Line Items]
Total stock-based compensation expense	607	458	1,207	978
Research And Development Expense [Member]
Stockholders Equity [Line Items]
Total stock-based compensation expense	1,232	1,477	2,379	2,706
Selling And Marketing Expense [Member]
Stockholders Equity [Line Items]
Total stock-based compensation expense	1,761	1,837	3,525	3,628
General And Administrative [Member]
Stockholders Equity [Line Items]
Total stock-based compensation expense	4,835	4,383	10,142	8,632
Total Operating Expenses [Member]
Stockholders Equity [Line Items]
Total stock-based compensation expense	$ 7,828	$ 7,697	$ 16,046	$ 14,966