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Investment in Sales-Type Leases, Net (Details 1) - USD ($)
Sep. 30, 2018
Dec. 31, 2017
Investment in Sales-Type Leases, Net [Abstract]    
2019 $ 33,070,706  
2020 12,385,161  
2021 12,385,161  
2022 12,385,161  
2023 6,628,678  
Thereafter 11,600,186  
Total $ 88,455,053 $ 99,155,214