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The maturities of the long-term debt (excluding unamortized debt issuance costs) as of December 31, 2020, are as follows: (Details)
Dec. 31, 2020
USD ($)
Debt Disclosure [Abstract]  
2021 $ 6,501,666
2022 5,997,681
2023 136,433
2024 44,498
2025 26,483
Total                             $ 12,706,761