Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ (394)	$ 20	$ (758)	$ 38
Effective income tax rate, percent	1.50%	(0.20%)	1.30%	(0.30%)
Unrecognized tax benefits	$ 0		$ 0		$ 0