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Income Taxes - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Income Tax [Line Items]          
Income tax expense   $ 4,013 $ 4,070 $ 13,789 $ 9,609
Effective tax rate   37.80%   40.00% 41.20%
Scenario, Forecast          
Income Tax [Line Items]          
Effective tax rate 41.70%