Balance Sheet Information-Warranty (Details 6) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Sep. 29, 2013	Sep. 30, 2012
Movement in Standard Product Warranty Accrual [Roll Forward]
Product Warranty Accrual, beginning of period	$ 38,355	$ 31,640	$ 38,787	$ 26,957
Additions and adjustments to cost of revenues	11,587	4,565	22,505	18,044
Usage	(10,973)	(4,339)	(22,323)	(13,135)
Product Warranty Accrual, end of period	$ 38,969	$ 31,866	$ 38,969	$ 31,866