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Notes Payable and Other Long-term Liabilities, Net - Schedule of Changes in Debt Issuance Costs (Detail) - USD ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Debt Disclosure [Abstract]    
Beginning balance $ 1,670,529  
Less: Amortization expense (88,718) $ (23,475)
Debt issuance costs, net of accumulated amortization $ 1,581,811