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EARNINGS PER SHARE (Tables)
 6 Months Ended
Jun. 30, 2019
Earnings Per Share [Abstract]  
Earnings per share calculation
A summary of the earnings per share calculation is as follows:    
 
Three Months Ended
 
Six Months Ended
(In thousands, except per share amounts)
June 30,
2019
 
June 30,
2018
 
June 30,
2019
 
June 30,
2018
Basic earnings per share:
 
 
 
 
 
 
 
Net income
$
10,845

 
$
15,381

 
$
18,078

 
$
29,581

Weighted-average common shares
29,297

 
29,505

 
29,125

 
29,651

Basic earnings per share
$
0.37

 
$
0.52

 
$
0.62

 
$
1.00

Diluted earnings per share: (1)
 
 
 
 
 
 
 
Net income
$
10,845

 
$
15,381

 
$
18,078

 
$
29,581

Weighted-average common shares
29,297

 
29,505

 
29,125

 
29,651

Effect of dilutive awards:
 
 
 
 
 
 
 
Employee stock plans
405

 
678

 
472

 
736

Diluted weighted-average common shares
29,702

 
30,183

 
29,597

 
30,387

Diluted earnings per share
$
0.37

 
$
0.51

 
$
0.61

 
$
0.97

_______________
(1)
The Company includes the shares underlying performance-based awards in the calculation of diluted earnings per share if the performance conditions have been satisfied as of the end of the reporting period and excludes such shares when the necessary conditions have not been met. The Company has excluded the shares underlying the outstanding performance-based awards in the 2019 and 2018 calculations as the shares were not contingently issuable as of the end of the reporting periods.