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Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Detail) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]    
U.S. federal statutory rate applied to pretax income (loss) $ 34,000 $ (512,000)
State taxes, net of federal benefit 165,082 (146,000)
Permanent differences 11,000 7,000
Benefit of federal operating loss carryforwards (381,000) (170,000)
Cumulative adjustment to deferred taxes   612,000
Change in state tax rates and other 140,000 157,000
Change in valuation allowance 250,000 $ 52,000
Total income tax expense (benefit) $ 219,082