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Intangible Assets (Details 1) - USD ($)
Mar. 31, 2019
Dec. 31, 2018
Amortization of intangible assets attributable to future periods    
2020 $ 357,257  
2021 312,812  
2022 105,871  
2023 105,871  
2024 91,047  
Thereafter 2,544,273  
Intangible assets, Net $ 3,544,484 $ 3,562,513