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Income Taxes - Additional Information (Detail) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018
Income Taxes [Line Items] |  |
Deferred tax assets, net operating loss carryforwards | $ 1,240,000 | $ 1,446,000
Benefit of net operating loss carryforwards | 5,400,000 |
Unrecognized tax benefit that would affect the effective tax rate | 2,800,000 |
Uncertain tax positions, interest expense and penalties accrued | 400,000 |
Minimum [Member] |  |
Income Taxes [Line Items] |  |
Decrease in unrecognized tax benefits, net of penalties and interest | 0 |
Maximum [Member] |  |
Income Taxes [Line Items] |  |
Decrease in unrecognized tax benefits, net of penalties and interest | $ 2,000,000.0 |

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