Financing Arrangements (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended				12 Months Ended
	Jan. 01, 2012	Oct. 02, 2011	Jul. 03, 2011	Apr. 03, 2011	Jan. 01, 2012
Debt Instrument
Reacquisition Of Equity Component					$ 1,844
Total loss on early extinguishment of debt before tax	0	11,493	0	0
1% Sr. Convertible Notes due 2013 [Member]
Debt Instrument
Fair value of debt redeemed	208,958				208,958
Reacquisition Of Equity Component					2,161
Total consideration related to principal amount of debt redeemed					211,119
Carrying value of debt redeemed	(198,563)				(198,563)
Loss on extinguishment of debt, before tax					10,395
Reacquisition costs					318
Extinguishment of related unamortized debt issuance costs (net)					780
Total loss on early extinguishment of debt before tax					$ 11,493