XML 15 R23.htm IDEA: XBRL DOCUMENT  v2.3.0.11
7. Earnings Per Share (Tables)
6 Months Ended
Jun. 30, 2011
Earnings Per Share [Abstract]  
Schedule of weighted-average common shares outstanding used to calculate basic and diluted earnings per shares and the anti-dilutive shares
The weighted average number of common shares outstanding used to calculate basic and diluted earnings per share and the anti-dilutive shares are as follows (in thousands):


 
Three Months Ended
 
Six Months Ended
 
June 30,
 
June 30,
 
2011
 
2010
 
2011
 
2010
 
 
 
 
 
 
 
 
Basic weighted average shares outstanding
28,014


 
27,606


 
27,959


 
27,575


Effect of potentially dilutive stock options and restricted stock awards
481


 
519


 
484


 
522


Diluted weighted average common shares
28,495


 
28,125


 
28,443


 
28,097


Anti-dilutive shares


 
96


 
37


 
96