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Construction Backlog (Details) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2018
Sep. 30, 2017
Dec. 31, 2017
Construction Backlog [Abstract]      
Balance - beginning of period $ 76,659,029   $ 541,291
New contracts and change orders during the period 27,000,000 $ 15,000,000 81,179,323
Construction backlog, gross 104,386,763   81,720,614
Less: contract revenue earned during the period (1,543,526)   (5,061,585)
Balance - end of period $ 102,843,237   $ 76,659,029