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Construction in Progress (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Construction in Progress (Textual)        
Interest costs capitalized $ 363,165 $ 357,779 $ 713,837 $ 716,708