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Income Taxes (Tables) | 9 Months Ended
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Sep. 30, 2020
Income Tax Disclosure [Abstract] |
Summary of Provision for Income Taxes and Corresponding Effective Tax Rate | A summary of the provision for income taxes and the corresponding effective tax rate for the three and nine months ended September 30, 2020 and 2019, is shown below:
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30, |  |  | September 30, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Income tax expense |  | $ | 9,603 |  |  | $ | 6,771 |  |  | $ | 15,214 |  |  | $ | 19,214 |
Earnings before income tax |  | $ | 33,749 |  |  | $ | 22,658 |  |  | $ | 40,911 |  |  | $ | 46,266 |
Effective tax rate |  |  | 28.5 | % |  |  | 29.9 | % |  |  | 37.2 | % |  |  | 41.5 | %

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