Earnings Per Share (Computation Of Earnings Per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2012	Apr. 02, 2011
Earnings Per Share [Abstract]
Weighted average common shares outstanding	51,998	55,353
Effect of dilutive securities outstanding	303	421
Diluted weighted average shares outstanding	52,301	55,774
Income from continuing operations	$ 30,164	$ 30,128
Income (loss) from discontinued operations	0	31,506
Net income	$ 30,164	$ 61,634
Income from continuing operations, Basic per share amounts	$ 0.58	$ 0.54
Income (loss) from discontinued operations, Basic per share amounts	$ 0.00	$ 0.57
Net income, Basic per share amounts	$ 0.58	$ 1.11
Income from continuing operations, Diluted per share amounts	$ 0.58	$ 0.54
Income (loss) from discontinued operations, Diluted per share amounts	$ 0.00	$ 0.56
Net income, Diluted per share amounts	$ 0.58	$ 1.10

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