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Intangible Assets, Net (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization expense $ 46,167 $ 64,084 $ 246,681 $ 256,332
Estimated aggregate amortization expense for 2021 138,500   184,667  
Estimated aggregate amortization expense for 2022 149,944   149,944  
Estimated aggregate amortization expense for 2023 18,000   18,000  
Estimated aggregate amortization expense for 2024 17,354   17,354  
Estimated aggregate amortization expense for 2025 2,500   2,500  
Estimated aggregate amortization expense for thereafter $ 8,745   $ 8,745