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Earnings Per Share (Tables)
 3 Months Ended
Mar. 31, 2013
Earnings Per Share [Abstract]  
Computation of earnings per share and reconciliation of basic and diluted weighted average common shares outstanding
The table below presents the computation of earnings per share, including the reconciliation of basic and diluted weighted average shares outstanding (in thousands, except EPS):

 
 
Three Months Ended
 
 
March 31,
 
 
2013
 
2012
Net income
 
$
3,440

 
$
3,651

 
 
 
 
 
Weighted average shares outstanding:
 
 
 
 
Basic
 
46,385

 
47,519

Effect of dilutive securities:
 
 
 
 
Stock options and employee stock purchase plan
 
1,195

 
1,079

Diluted
 
47,580

 
48,598

 
 
 
 
 
Earnings per share:
 
 
 
 
Basic
 
$
0.07

 
$
0.08

Diluted
 
$
0.07

 
$
0.08

 
 
 
 
 
Anti-dilutive stock options excluded from diluted earnings per share computations
 
3

 
1,199