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Balance Sheet Information-Warranty (Details 6) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jul. 01, 2012	Jun. 30, 2013	Jul. 01, 2012
Movement in Standard Product Warranty Accrual [Roll Forward]
Product Warranty Accrual, beginning of period	$ 38,972	$ 32,119	$ 38,787	$ 26,957
Additions and adjustments to cost of revenues	6,040	3,073	10,918	13,479
Usage	(6,657)	(3,552)	(11,350)	(8,796)
Product Warranty Accrual, end of period	$ 38,355	$ 31,640	$ 38,355	$ 31,640

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

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