Quarterly report pursuant to Section 13 or 15(d)

Construction Backlog (Details)

v3.19.1
Construction Backlog (Details) - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Construction Backlog [Abstract]    
Balance - beginning of period $ 97,657,379 $ 76,659,029
New contracts and change orders during the period (82,415) 29,189,062
Construction backlog, gross 97,574,964 105,848,091
Less: contract revenue earned during the period (1,735,124) (8,190,712)
Balance - end of period $ 95,839,840 $ 97,657,379