Construction Backlog (Tables)

9 Months Ended

Sep. 30, 2020

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]

Schedule of backlog of signed construction and engineering contracts

	2020			2019
Balance - beginning of period	$	17,634,261		$	97,657,379
New contracts and change orders during the period		8,662,873			17,659,053
Adjustments and cancellations, net		(27,370	)		(94,697,336	)
Subtotal		26,269,764			20,619,096
Less: contract revenue earned during the period		(1,404,265	)		(2,984,835	)
Balance - end of period	$	24,865,499		$	17,634,261

Construction Backlog [Member]

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]

Summary of expects to satisfy remaining unsatisfied performance obligation

	2020
Within 1 year	$	12,009,249
1 to 2 years		12,856,250
Total Backlog	$	24,865,499