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Income Taxes - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Income Tax [Line Items]    
Valuation allowance $ 12,452,000 $ 12,202,000
Federal corporate income tax rate 26.80%  
Income tax expense $ 219,082  
Federal income tax net operating loss carry forward $ 17,200,000 $ 18,900,000
Net operating loss carry forwards expiration beginning year 2031  
Net operating loss carry forwards expiration ending year 2037  
State [Member]    
Income Tax [Line Items]    
Operating loss carryforwards $ 0