Segment Information - Revenue by End Market (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Oct. 01, 2011	Jul. 02, 2011	Apr. 02, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Concentration Risk [Line Items]
Revenue	$ 233,621	$ 200,821	$ 178,002	$ 216,730	$ 226,987	$ 215,988	$ 228,785	$ 224,323	$ 829,174	$ 896,083	$ 878,703
Sales Revenue, End Market [Member]
Concentration Risk [Line Items]
Revenue									829,174	896,083	878,703
Sales Revenue, End Market [Member] | Mobile Devices
Concentration Risk [Line Items]
Revenue									538,273	634,498	601,160
Sales Revenue, End Market [Member] | Networks
Concentration Risk [Line Items]
Revenue									192,654	178,378	185,952
Sales Revenue, End Market [Member] | Defense & Aerospace
Concentration Risk [Line Items]
Revenue									$ 98,247	$ 83,207	$ 91,591