Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2012

Weighted-average Shares Used to Calculate Basic and diluted EPS

Basic earnings per share (EPS) is computed by dividing net income by the weighted-average shares of common stock outstanding. Diluted EPS is computed by dividing net income by the weighted-average shares of common stock outstanding, adjusted for the effect of potentially dilutive stock awards outstanding during the period. The following table reflects weighted-average shares used to calculate basic and diluted EPS for the periods presented (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
Basic shares		64,772		64,072		64,534		64,012
Dilutive shares		167		209		164		218
Diluted shares		64,939		64,281		64,698		64,230

Weighted-average antidilutive stock awards

Weighted-average antidilutive shares awarded were excluded in determining diluted earnings per share. The following table reflects weighted-average antidilutive shares awarded for the periods presented (in thousands):

	Six Months Ended June 30,
	2012		2011

Weighted-average antidilutive shares		807		1,250