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Earnings Per Share
 9 Months Ended
Sep. 29, 2012
Earnings Per Share
(5) Earnings Per Share

Earnings per common share attributable to Landstar are based on the weighted average number of common shares outstanding, which includes outstanding non-vested restricted stock. Diluted earnings per share attributable to Landstar are based on the weighted average number of common shares outstanding plus the incremental shares that would have been outstanding upon the assumed exercise of all dilutive stock options.

The following table provides a reconciliation of the average number of common shares outstanding used to calculate earnings per share attributable to Landstar to the average number of common shares and common share equivalents outstanding used to calculate diluted earnings per share attributable to Landstar (in thousands):

 

     Thirty Nine Weeks Ended      Thirteen Weeks Ended  
     September 29,
2012		      September 24,
2011		      September 29,
2012		      September 24,
2011		  

Average number of common shares outstanding

      46,775         47,670         46,614         47,358   

Incremental shares from assumed exercises of stock options

      189         65         118         29   
  

 

 

     

 

 

     

 

 

     

 

 

  

Average number of common shares and common share equivalents outstanding

      46,964         47,735         46,732         47,387   
  

 

 

     

 

 

     

 

 

     

 

 

  

For the thirty-nine-week and thirteen-week periods ended September 29, 2012, 2,000 and 323,000, respectively, options outstanding to purchase shares of common stock were excluded from the calculation of diluted earnings per share attributable to Landstar because they were antidilutive. For the thirty-nine-week and thirteen-week periods ended September 24, 2011, there were 224,844 and 578,867, respectively, options outstanding to purchase shares of common stock excluded from the calculation of diluted earnings per share attributable to Landstar because they were antidilutive. For the thirty-nine-week and thirteen-week periods ended September 29, 2012, RSUs were excluded from the calculation of diluted earnings per share attributable to Landstar because the performance metrics requirements for vesting have not been satisfied.