Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income tax expense	$ 2,670	$ 5,510	$ 6,870	$ 1,057
Effective tax rate, current income tax expense (benefit)	17.50%	27.50%	20.10%	2.70%
Measurement period adjustment, transition tax increase (decrease)			$ 4,836
Excess tax benefits, stock awards			$ 1,072	$ 5,150