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