Income Taxes - Components of (loss) income before income taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
United States	$ (9,820)	$ 2,314
Other Countries	(159)	(1,927)
(Loss) income from continuing operations before provision for income taxes	$ (9,979)	$ 387