Immaterial Restatement Not Restated (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2012	Sep. 25, 2011	Sep. 30, 2012	Sep. 25, 2011	Sep. 30, 2012	Sep. 25, 2011
Net income (loss)	$ 140,688	$ 152,218	$ 111,595	$ 71,574	$ 110,767	$ 8,116
Provision (benefit) for taxes	$ 51,713	$ 37,844	$ 41,395	$ 21,773	$ 30,839	$ (12,424)