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EARNINGS PER SHARE
 6 Months Ended
Jun. 30, 2019
Earnings Per Share [Abstract]  
EARNINGS PER SHARE EARNINGS PER SHARE     
The following are computations of basic and diluted earnings per share (in thousands except for per share amounts):
 
Three Months Ended
 
Six Months Ended
 
June 30,
 
June 30,
 
2019
 
2018
 
2019
 
2018
Numerator for basic and diluted earnings per share:
 
 
 
 
 
 
 
Net income
$
36,244

 
$
30,747

 
$
37,220

 
$
18,116

 
 
 
 
 
 
 
 
Denominator:
 
 
 
 
 
 
 
Basic shares outstanding
55,875

 
56,410

 
55,861

 
56,304

Dilutive effect of stock-based compensation awards
191

 
95

 
140

 
95

Dilutive shares outstanding
56,066


56,505


56,001

 
56,399

 
 
 
 
 
 
 
 
Basic income per share:
$
0.65

 
$
0.55

 
$
0.67

 
$
0.32

 
 

 
 

 
 

 
 

Diluted income per share:
$
0.65

 
$
0.54

 
$
0.66

 
$
0.32


For the three months ended June 30, 2019 and June 30, 2018, the dilutive effect of all then outstanding restricted stock and performance awards is included in the earnings per share calculation above except for 75,759 and 146,159 of performance stock awards for which the performance criteria were not attained at that time and 4,623 and 136,155, respectively, of restricted stock awards which were antidilutive.
For the six months ended June 30, 2019 and June 30, 2018, the dilutive effect of all then outstanding restricted stock and performance awards is included in the earnings per share calculation above except for 75,759 and 146,159 of performance stock awards for which the performance criteria were not attained at that time and 78,892 and 130,932, respectively, of restricted stock awards which were antidilutive.