Earnings Per Share (Computation Of Earnings Per Share) (Details) (USD $) In Thousands, except Per Share data	3 Months Ended	6 Months Ended
Jul. 02, 2011	Jul. 03, 2010	Jul. 02, 2011	Jul. 03, 2010
Earnings Per Share
Weighted average common shares outstanding	54,546	57,489	54,981	57,756
Effect of dilutive securities outstanding	412	248	414	247
Diluted weighted average shares outstanding	54,958	57,737	55,395	58,003
Income from continuing operations	$ 33,169	$ 22,185	$ 63,297	$ 47,732
Income (loss) from discontinued operations	(205)	492	31,301	(322)
Net income	$ 32,964	$ 22,677	$ 94,598	$ 47,410
Income from continuing operations, basic per share	$ 0.60	$ 0.38	$ 1.15	$ 0.83
Income (loss) from discontinued operations, basic per share	$ 0.00	$ 0.01	$ 0.57	$ (0.01)
Net income, basic per share	$ 0.60	$ 0.39	$ 1.72	$ 0.82
Income from continuing operations, diluted per share	$ 0.60	$ 0.38	$ 1.14	$ 0.83
Income (loss) from discontinued operations, diluted per share	$ 0.00	$ 0.01	$ 0.57	$ (0.01)
Net income, diluted per share	$ 0.60	$ 0.39	$ 1.71	$ 0.82

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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