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Leases - Future Minimum Lease Payments Under Operating Leases (Detail)
Sep. 30, 2019
USD ($)
Leases [Abstract]  
2020 $ 1,521,451
2021 2,256,379
2022 2,521,446
2023 2,590,558
2024 2,661,512
2025 and thereafter 10,834,206
Total $ 22,385,552