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Income Taxes - Additional Information (Detail) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Tax Contingency [Line Items] |  |  |
Statutory corporate tax rate | 21.00% | 21.00% | 35.00%
Tax cuts and jobs act of 2017, accounting complete | true |  |
Federal General Business Tax Credit Carry Forward [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Tax credit carryforwards | $ 0 |  |
Alternative Minimum Tax Credit Carry Forward [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Tax credit carryforwards | 0 |  |
State [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Net operating loss carryforwards | $ 700,000 |  |
Net operating loss carryforwards expiration date | Dec. 31, 2025 |  |
Internal Revenue Service [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Open tax years | 2011 2012 2013 2014 |  |

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