Significant Accounting Policies (Tables)

6 Months Ended

Mar. 31, 2020

Accounting Policies [Abstract]

Schedule of Concentration Risk

Two customers accounted for more than 10.0% of consolidated revenues during the three and six months ended March 31, 2019, as follows:

	% of Consolidated Revenues
	For the Three Months Ended March 31,			For the Six Months Ended March 31,
	2020	2019		2020	2019
Alabama Department of Transportation	8.8 %	12.3	%	9.8 %	11.1	%
North Carolina Department of Transportation	7.6 %	10.7	%	8.1 %	12.6	%

Schedule of Revenue by Major Customers

The following table reflects, for the periods presented, (i) revenues generated from public infrastructure construction projects and the sale of construction materials to public customers and (ii) revenues generated from private infrastructure construction projects and the sale of construction materials to private customers.

	% of Consolidated Revenues
	For the Three Months Ended March 31,		For the Six Months Ended March 31,
	2020	2019	2020	2019
Private	39.4 %	30.7 %	39.4 %	31.4 %
Public	60.6 %	69.3 %	60.6 %	68.6 %