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Income Taxes (Tables) | 6 Months Ended
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Jun. 30, 2019
Income Tax Disclosure [Abstract] |
Provision for Income Taxes and Effective Income Tax Rates | The provision for income taxes and the effective income tax rates were as follows (dollars in thousands):
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Provision for income taxes |  | $ | 113 |  |  | $ | 363 |  |  | $ | 539 |  |  | $ | 497 |
Effective income tax rate |  |  | 4.2 | % |  |  | 4.4 | % |  |  | 7.3 | % |  |  | 4.0 | %

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- Definition Tabular disclosure of provision for income taxes and effective income tax rate. + References No definition available. + Details
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