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NET INCOME PER SHARE
 6 Months Ended
Jun. 30, 2011
NET INCOME PER SHARE  
NET INCOME PER SHARE

9.  NET INCOME PER SHARE

 

For the three and six months ended June 30, 2010 and 2011, outstanding stock options were the only potentially dilutive securities.

 

The reconciliation from basic to diluted weighted average common shares outstanding is as follows (in thousands):

 

 

 

Three Months Ended
June 30,

 

Six Months Ended
June 30,

 

 

 

2010

 

2011

 

2010

 

2011

 

Basic weighted average common shares outstanding

 

15,300

 

15,394

 

15,280

 

15,389

 

Stock options

 

178

 

103

 

183

 

102

 

Diluted weighted-average common shares outstanding

 

15,478

 

15,497

 

15,463

 

15,491

 

 

The above calculations for the three months ended June 30, 2010 and 2011 do not include 114,000 and 293,000 shares, respectively, related to certain stock options because the effects of such were anti-dilutive. For the six months ended June 30, 2010 and 2011, the calculation does not include 87,000 and 245,000 shares, respectively, related to certain stock options because the effect on such options was anti-dilutive.