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Income Taxes - Schedule of Reconciliation of Effective Income Tax Amount (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Income tax benefit using U.S. federal statutory rate	$ 1,397	$ 2,328
State income tax expense	(30)	0
Foreign income tax expense	(78)	0
Non-deductible expenses	(66)	(17)
Impact of change in statutory rate
Change in valuation allowance	(1,306)	(2,311)
Other	(33)	0
Provision for income taxes	$ (116)	$ 0

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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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