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Income Taxes (Tables) | 9 Months Ended
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Sep. 30, 2019
Income Tax Disclosure [Abstract] |
Income Tax Expense From Continuing Operations And The Effective Tax Rate | The following table presents Income tax expense and the effective tax rate:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
| (Dollars in thousands)
Income tax expense | $ | 39,568 |  |  | $ | 40,621 |  |  | $ | 109,825 |  |  | $ | 95,320 |
Effective tax rate | 20 | % |  | 23 | % |  | 19 | % |  | 19 | %

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