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SHARE-BASED COMPENSATION PLANS (Tables) | 3 Months Ended
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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 |

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