Summary of Significant Accounting Policies (Details) (USD $) In Thousands, except Share data	3 Months Ended		6 Months Ended
	Jul. 02, 2011	Jul. 03, 2010	Jul. 02, 2011	Jul. 03, 2010
Minimum Weeks In Fiscal Year			P52W
Maximum Weeks In Fiscal Year			P53W
Number Of Weeks in Quarter	P13W	P13W
Number Of Weeks Year To Date			P26W	P26W
Basic:
Net income	$ 52,227	$ 11,371	$ 98,789	$ 22,849
Shares	117,064,000	82,444,000	112,795,000	82,366,000
Per Share	$ 0.45	$ 0.14	$ 0.88	$ 0.28
Effect of dilutive securities: [Abstract]
Add: Option shares in the money and dilutive effect of non-vested stock	973,000	784,000	986,000	785,000
Less: Pro forma treasury shares	(365,000)	(401,000)	(381,000)	(403,000)
Diluted:
Net Income	$ 52,227	$ 11,371	$ 98,789	$ 22,849
Shares	117,672,000	82,827,000	113,400,000	82,748,000
Per Share	$ 0.44	$ 0.14	$ 0.87	$ 0.28
Common Stock [Member]
Public Offering [Abstract]
Public offering, shares of common stock			24,193,548
Stock Options [Member]
Antidilutive Securities [Abstract]
Antidilutive securities excluded from computation of earnings per share, amount	72,157	101,722	50,387	73,964
Non Vested Stock [Member]
Antidilutive Securities [Abstract]
Antidilutive securities excluded from computation of earnings per share, amount	326,526	0	350,125	0