
Note 13.	Per Share Data

Basic loss per common share is calculated by dividing net loss by the weighted average number of common shares outstanding during the period. Diluted earnings (loss) per common share adjusts basic earnings (loss) per common share, computed using the treasury stock method, for the effects of potentially dilutive common shares, if the effect is not antidilutive. Potentially dilutive common shares issuable under our equity-based compensation plans where the average market price exceeded the exercise price were 12 million and 37 million shares as of March 31, 2012 and 2011, respectively. All such potentially dilutive shares were antidilutive for the three-month periods ended March 31, 2012 and 2011 and, therefore, have no effect on our determination of dilutive weighted average number of shares outstanding.