Net Income (Loss) Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
Basic and diluted net income (loss) per share
Net income (loss)	$ 72,229	$ 126,538	$ (149,871)
Weighted-average common shares used to calculate basic net income (loss) per share	263,892	260,787	257,782
2023 Notes	11	11	0
Equity based compensation	6,913	5,073	0
Weighted-average common shares used to calculate diluted net income (loss) per share	270,816	265,871	257,782
Net income (loss) per share -- basic	$ 0.27	$ 0.49	$ (0.58)
Net income (loss) per share -- diluted	$ 0.27	$ 0.48	$ (0.58)