Common Stock Activity

3 Months Ended

Mar. 31, 2013

Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]

Common Stock Activity

Common Stock Activity

Treasury Stock and Share Activity

A summary of share activity for the periods indicated, which may contain summation differences due to rounding, is as follows (in thousands):

	Common Shares Outstanding	Treasury Shares
Balance as of December 31, 2012	76,448	9,467
Shares issued for stock option exercises	194
Shares issued for restricted stock awards	21
Other shares issued	125
Balance as of March 31, 2013	76,789	9,467