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Debt - Future Principal Payment Requirements on Outstanding Secured Debt (Detail) - USD ($)
Mar. 31, 2021
Dec. 31, 2020
Debt Instruments [Abstract]    
2021 $ 766,352  
2022 46,455,835  
2023 1,048,841  
2024 54,713,629  
2025 1,799,440  
2026 and thereafter 103,657,209  
Total payments 208,441,306  
Debt issuance costs, net (1,606,390) $ (1,724,792)
Total $ 206,834,916 $ 206,839,694