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Income Taxes - Schedule of Income (Loss) Before Income Taxes (Detail) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]      
Expected (benefit) $ (3,254,942) $ (1,923,757) $ (3,718,058)
Effects of:      
State income taxes net of federal benefits (156,858) (92,707) (110,667)
Nondeductible expense 262,776 29,670 711,679
Change in valuation allowance 5,170,161 3,765,560 28,258,724
Foreign Rate Differential (2,021,137) (1,778,766) (1,097,681)
Change in Deferred Taxes due to enacted changes in tax law     (24,043,997)
Income tax provision (benefit) $ 0 $ 0 $ 0