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Earnings Per Share (Tables)
 6 Months Ended
Jun. 30, 2019
Basic and Diluted Weighted Average Shares Outstanding Basic and diluted weighted average shares outstanding were as follows:
                                 
 
Three Months Ended
June 30,
   
Six Months Ended
June 30,
 
 
2019
   
2018
   
2019
   
2018
 
 
(Amounts in 
thousands, 
except per 
share data)
  
Net income
  $
8,095
    $
2,738
    $
16,148
    $
6,185
 
                                 
Weighted average shares used in computing net income per share - basic
   
46,367
     
43,743
     
45,174
     
43,683
 
Effect of dilutive shares:
   
     
     
     
 
Stock options and restricted stock awards
   
791
     
481
     
760
     
434
 
Convertible senior notes
   
1,898
     
792
     
1,758
     
578
 
                                 
Dilutive potential common shares
   
2,689
     
1,273
     
2,518
     
1,012
 
                                 
Weighted average shares used in computing net income per share - diluted
   
49,056
     
45,016
     
47,692
     
44,695
 
                                 
Earnings per share:
   
     
     
     
 
Basic
  $
0.17
    $
0.06
    $
0.36
    $
0.14
 
                                 
Diluted
  $
0.17
    $
0.06
    $
0.34
    $
0.14