Net Income Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2012		Sep. 29, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2011		Oct. 01, 2011		Jul. 02, 2011		Apr. 02, 2011		Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Earnings Per Share [Abstract]
Net (loss) income	$ (3,756)		$ (11,246)		$ (13,050)		$ 1,883		$ 4,308		$ 14,838		$ 16,565		$ 12,439		$ (26,169)		$ 48,150		$ 190,837
Shares for net (loss) income per share:
Weighted average shares outstanding—Basic																	164,366		164,256		155,870
Dilutive securities																	0		8,254		7,616
Weighted average shares outstanding—Dilutive																	164,366		172,510		163,486
Basic	$ (0.02)	[1]	$ (0.07)	[1]	$ (0.08)	[1]	$ 0.01	[1]	$ 0.03	[1]	$ 0.09	[1]	$ 0.10	[1]	$ 0.08	[1]	$ (0.16)	[1]	$ 0.29	[1]	$ 1.22
Diluted	$ (0.02)	[1]	$ (0.07)	[1]	$ (0.08)	[1]	$ 0.01	[1]	$ 0.03	[1]	$ 0.09	[1]	$ 0.10	[1]	$ 0.07	[1]	$ (0.16)	[1]	$ 0.28	[1]	$ 1.17

[1] Earnings per share is computed individually for each of the quarters presented; therefore, the sum of the quarterly earnings per share may not necessarily equal the total for the year.