Debt Debt (Details 4) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Debt Instrument [Line Items]
Principal amount repurchased			$ 205,539
Unamortized Debt Discount			(22,738)
Extinguishment of liability component			(186,746)
Related debt issuance costs			(1,760)
Loss on early extinguishment of debt	0	0	(5,705)
Convertible Notes Due Twenty-Eleven [Member]
Debt Instrument [Line Items]
Principal amount repurchased			100,000
Unamortized Debt Discount			(6,958)
Extinguishment of liability component			(95,865)
Related debt issuance costs			(676)
Loss on early extinguishment of debt			(3,499)
Notes Due Twenty-Thirteen [Member]
Debt Instrument [Line Items]
Principal amount repurchased			105,539
Unamortized Debt Discount			(15,780)
Extinguishment of liability component			(90,881)
Related debt issuance costs			(1,084)
Loss on early extinguishment of debt			$ (2,206)