Segment Information (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 03, 2015 product segment	Dec. 28, 2013	Dec. 29, 2012
Segment Information
Number of operating segments	1
Number of product categories	3
Revenue and property and equipment, net by geographic area
Revenues	$ 620,704	$ 580,087	$ 563,294
Property and equipment, net	132,820	132,445
United States
Revenue and property and equipment, net by geographic area
Revenues	89,935	68,566	64,856
Property and equipment, net	127,928	126,263
China
Revenue and property and equipment, net by geographic area
Revenues	271,818	253,261	219,400
Taiwan
Revenue and property and equipment, net by geographic area
Revenues	57,191	55,036	64,150
South Korea
Revenue and property and equipment, net by geographic area
Revenues	12,824	21,303	57,910
Rest of world
Revenue and property and equipment, net by geographic area
Revenues	188,936	181,921	156,978
Property and equipment, net	4,892	6,182
Broad-based
Revenue and property and equipment, net by geographic area
Revenues	317,128	281,777	270,098
Broadcast
Revenue and property and equipment, net by geographic area
Revenues	204,256	199,837	186,067
Access
Revenue and property and equipment, net by geographic area
Revenues	$ 99,320	$ 98,473	$ 107,129