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Acquisitions (Schedule Of Supplemental Unaudited Pro Forma Results) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Acquisitions [Abstract]
Sales	$ 218,809	$ 236,097	$ 652,120	$ 716,939
Income from continuing operations	$ 14,527	$ 18,959	$ 29,678	$ 45,240
Earnings per share from continuing operations, Basic	$ 0.45	$ 0.59	$ 0.93	$ 1.42
Earnings per share from continuing operations, Diluted	$ 0.45	$ 0.59	$ 0.92	$ 1.41

The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect per basic share of common stock for a period as if the business combination or combinations had been completed at the beginning of a period.

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- Definition

The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect, per diluted share of common stock for a period as if the business combination or combinations had been completed at the beginning of a period.

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