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Leases - Summary of Maturities of Lease Liabilities (Detail) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
Leases [Abstract]    
2021 $ 475,372  
2022 484,484  
2023 493,868  
2024 503,535  
2025 168,929  
Total operating lease payments 2,126,188  
Less: imputed interest (301,348)  
Total operating lease liabilities (see Note 7 and 9) $ 1,824,840 $ 1,744,128