Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies (Tables)

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Significant Accounting Policies (Tables)
9 Months Ended
Jun. 30, 2018
Accounting Policies [Abstract]  
Consolidation of Revenues

Two customers accounted for more than 10% of consolidated revenues for the periods presented below (unaudited):

 

     % of consolidated     % of consolidated  
     revenues     revenues  
     for the three months ended
June 30,
    for the nine months ended
June 30,
 
     2018     2017     2018     2017  

Alabama Department of Transportation

     17.0     13.6     14.8     12.8

North Carolina Department of Transportation

     14.8     16.6     13.5     13.2