Segment Information, Geographic Data, and Significant Customers (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 30, 2012	Sep. 30, 2012	Jul. 01, 2012	Apr. 01, 2012	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 387,326	$ 356,800	$ 346,094	$ 330,958	$ 309,265	$ 285,874	$ 280,607	$ 272,770	$ 1,421,178	$ 1,148,516	$ 1,055,535
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									714,662	568,443	528,723
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									354,682	291,404	277,971
Asia-Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									276,442	232,498	197,005
Other markets [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									$ 75,392	$ 56,171	$ 51,836