Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Liability for unrecognized tax benefit, including related estimates of penalties and interest	$ 0	$ 0
Income tax provision (benefit)	$ (19,000)	$ 15,000
Projected annual effective tax rate	0.20%	0.30%
Statutory tax rate	21.00%

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

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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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 increase (decrease) in unrecognized tax benefits attributable to uncertain tax positions taken in tax returns.

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