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Stock-Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Summary of Compensation Expense and Related Tax Benefits | The following table presents compensation expense and the related tax benefits for equity awards recognized in the consolidated statements of income:
| Three months ended June 30 |  | Six months ended June 30
| 2019 |  | 2018 |  | 2019 |  | 2018
| (in thousands)
Compensation expense | $ | 1,788 |  |  | $ | 2,674 |  |  | $ | 3,348 |  |  | $ | 4,184 |
Tax benefit | (412 | ) |  | (1,075 | ) |  | (743 | ) |  | (1,536 | )
Stock-based compensation expense, net of tax benefit | $ | 1,376 |  |  | $ | 1,599 |  |  | $ | 2,605 |  |  | $ | 2,648 |

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