Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Taxes [Abstract]
Income tax expense	$ 58	$ 204	$ 91	$ 528
Pre-tax loss	(3,945)	$ (8,072)	(8,518)	$ (16,860)
Uncertain tax positions, interest or penalties	$ 0		$ 0

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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