Debt (Details 3) (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
Amount Allocated
Extinguishment of liability component			186,746
Extinguishment of equity component			5,618
Total cash paid for repurchase	0	150,000	192,364
Convertible Notes Due Twenty-Eleven [Member]
Debt Instrument [Line Items]
Principal amount repurchased			100,000
Amount Allocated
Extinguishment of liability component			95,865
Extinguishment of equity component			2,285
Total cash paid for repurchase			98,150
Notes Due Twenty-Thirteen [Member]
Debt Instrument [Line Items]
Principal amount repurchased			105,539
Amount Allocated
Extinguishment of liability component			90,881
Extinguishment of equity component			3,333
Total cash paid for repurchase			$ 94,214