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Mortgage Notes Payable - Annual Principal Payments on Mortgage Notes Payable (Details)
Jun. 30, 2019
USD ($)
Debt Disclosure [Abstract]  
2020 $ 325,789
2021 489,675
2022 1,552,973
2023 2,516,980
2024 2,654,195
Thereafter 139,748,085
Total principal payments $ 147,287,697