Note 2 - Earnings Per Share

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Text Block]

2.     Earnings Per Share

We compute basic earnings per share by dividing net earnings available to common stockholders by the actual weighted average number of common shares outstanding for the reporting period.  Diluted earnings per share reflects the potential dilution that could occur if holders of unvested restricted and performance share units or vested or unvested stock options, exercised or converted their holdings into common stock.  The dilutive effect of restricted and performance share units and stock options was 2.3 million shares during the first quarter 2013, compared to 2.7 million shares during the first quarter 2012.