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Construction Backlog (Tables)
 9 Months Ended
Sep. 30, 2018
Construction Backlog [Abstract]  
Schedule of backlog of signed construction and engineering contracts

 

 

September 30,

2018

 

 

December 31,

2017

 

Balance – beginning of period

 

$

76,659,029

 

 

$

541,291

 

New contracts and change orders during the period

 

 

32,112,767

 

 

 

81,179,323

 

Subtotal

 

 

108,771,796

 

 

 

81,720,614

 

Less: contract revenue earned during the period 

 

 

(5,932,150

 )

 

 

(5,061,585

)

Balance – end of period

 

$

102,839,646

 

 

$

76,659,029