XML 72 R24.htm IDEA: XBRL DOCUMENT v2.4.0.6
Earnings per Common Share
 12 Months Ended
Dec. 31, 2012
Earnings per Common Share  
Earnings per Common Share

15. Earnings per Common Share

        Basic EPS is computed by dividing net income (the numerator) by the weighted-average number of common shares outstanding for the period (the denominator). Diluted EPS is similarly calculated except that the denominator is increased using the treasury stock method to reflect the potential dilution that could occur if outstanding stock options and stock appreciation rights were exercised and stock awards were vested at the end of the applicable period.

        The following is a calculation of basic and diluted weighted-average shares outstanding:

 
   December 31,  
(In thousands)
  2012   2011   2010  

Weighted-average shares—basic

     209,538     208,498     207,823  

Dilution effect of stock options, stock appreciation rights and stock awards at end of period

     1,455     2,263     2,567  
               

Weighted-average shares—diluted

     210,993     210,761     210,390  
               

Weighted-average stock awards and shares excluded from diluted earnings per share due to the anti-dilutive effect

     43     2     567