Shareholders' Equity (Summary Of Stock-Based Compensation Expense, Net Of Tax) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 04, 2014	Mar. 29, 2013
Stockholders Equity [Line Items]
Total stock-based compensation expense	$ 10,112	$ 8,818
Cost Of Sales [Member]
Stockholders Equity [Line Items]
Total stock-based compensation expense	747	600
Research And Development Expense [Member]
Stockholders Equity [Line Items]
Total stock-based compensation expense	1,477	1,147
Selling And Marketing Expense [Member]
Stockholders Equity [Line Items]
Total stock-based compensation expense	1,862	1,764
General And Administrative [Member]
Stockholders Equity [Line Items]
Total stock-based compensation expense	6,026	5,307
Total Operating Expenses [Member]
Stockholders Equity [Line Items]
Total stock-based compensation expense	$ 9,365	$ 8,218