Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2013

Earnings Per Share

Schedule of reconciliation of basic to diluted weighted average shares outstanding

The following table reconciles the basic to diluted weighted average shares outstanding using the treasury stock method (shares in thousands):

	Three months ended
	March 31,
	2013	2012
Weighted average shares outstanding — basic	87,138	85,864
Dilutive effect of stock options	1,485	2,377
Dilutive effect of restricted stock awards and units	203	335
Weighted average shares outstanding - diluted	88,826	88,576