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SHARE-BASED COMPENSATION PLANS (Tables)
 3 Months Ended
Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Share-based compensation expense and income tax benefits recognized during the periods
The following table provides information on share-based compensation expense and income tax benefits recognized during the periods:
 
Three months ended March 31,
 
2018
 
2017
 
(In thousands)
Stock option and stock purchase plans
$
1,875

 
1,905

Unvested stock
3,466

 
3,050

Share-based compensation expense
5,341

 
4,955

Income tax benefit
(1,161
)
 
(1,734
)
Share-based compensation expense, net of tax
$
4,180

 
3,221