Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2011

Earnings Per Share [Abstract]

Weighted-average Shares Used to Calculate Basic and diluted EPS

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,
	2011		2010		2011		2010
Basic shares		64,072		63,873		64,012		63,808
Dilutive shares		209		181		218		185
Diluted shares		64,281		64,054		64,230		63,993