Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Operating Loss Carryforwards [Line Items]
Income tax expense (benefit)	$ (140)	$ 1,660	$ 453	$ 3,149
Effective income tax rate	7.90%	42.50%	(5.00%)	33.10%