Income Taxes - Reconciliation of (Benefit) Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Reconciliation of Provision (Benefit) for Income Taxes [Abstract]
Tax provision at expected statutory rate	$ 821	$ 330
State taxes, net of federal benefit	92	43
Permanent differences	34	122
Credits	(108)	(82)
Foreign tax expense, and other	13	420
Change in rate	63	(138)
Change in valuation allowance	(4,709)	(530)
Permanent true-ups	687	0
Income tax (benefit) provision	$ (3,107)	$ 165

Income tax reconciliation permanent true-ups.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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