Weighted Average Common Shares

9 Months Ended

Sep. 30, 2011

Weighted Average Common Shares [Abstract]

Weighted Average Common Shares

12. WEIGHTED AVERAGE COMMON SHARES

The weighted average numbers of common shares used to compute basic and diluted net income per share for the quarters and years to date ended September 30, 2011 and 2010 were as follows:

	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

Excluded from our computations of diluted earnings per share were certain options to purchase shares of our common stock. These shares were excluded because the options' exercise prices were greater than the average market price of our common stock during the periods, and, therefore, the effect would have been anti-dilutive. The shares that would have had an anti-dilutive effect on our diluted net income per share for the quarters and years to date ended September 30, 2011 and 2010 were as follows:

	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

In addition to the common stock issued upon the exercise of employee stock options and the granting of restricted stock awards, we issued less than 0.1 million shares for the quarters ended September 30, 2011 and 2010, and less than 0.2 million shares for the years to date ended September 30, 2011 and 2010, upon the purchase of common stock pursuant to our employee stock purchase plan.