Weighted Average Common Shares (Tables)

9 Months Ended

Sep. 30, 2011

Weighted Average Common Shares [Abstract]

Weighted Average Numbers Of Common Shares Used To Compute Basic And Diluted Net Income Per Share

	For the Quarters Ended September 30,				For the Years to Date Ended September 30,
	2011		2010		2011		2010
	(Shares in thousands)
Basic common shares outstanding		73,582		78,919		74,858		80,206
Common stock equivalents		476		900		660		989
Diluted common shares outstanding		74,058		79,819		75,518		81,195

Shares That Have An Anti-Dilutive Effect On Diluted Net Income Per Share

	For the Quarters Ended September 30,				For the Years to Date Ended September 30,
	2011		2010		2011		2010
	(Shares in thousands)
Options that would have had an anti-dilutive effect		3,496		2,891		3,023		2,379