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Construction Backlog (Details) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Construction Backlog [Abstract]    
Balance - beginning of period $ 541,291 $ 105,851
New contracts and change orders during the period 306,097 807,786
Construction backlog, gross 847,388 913,637
Less: contract revenue earned during the period (84,635) (372,346)
Construction backlog, net 762,753 541,291
Contracts signed but not started
Balance - end of period $ 762,753 $ 541,291