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Earnings Per Share (Tables)
9 Months Ended
Sep. 30, 2011
Earnings Per Share [Abstract] 
Schedule Of Reconciliation Of Shares Used To Compute Earnings Per Share
     For the three months ended
September 30,
     For the nine months ended
September 30,
 
     2010      2011      2010      2011  

Weighted average shares outstanding used to compute basic net income per share

     13,467         11,623         13,542         12,016   

Incremental shares issuable upon the assumed exercise of stock options

     35         —           39         11   

Unvested restricted stock

     55         24         82         28   
  

 

 

    

 

 

    

 

 

    

 

 

 

Shares used to compute diluted earnings per share

     13,557         11,647         13,663         12,055