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Contracts Receivable Including Retainage, net (Tables)
9 Months Ended
Jun. 30, 2020
Contractors [Abstract]  
Schedule of Contracts Receivable Including Retainage, Net
Contracts receivable including retainage, net consisted of the following at June 30, 2020 and September 30, 2019 (in thousands):
June 30, 2020September 30, 2019
(unaudited)
Contracts receivable$112,294  $121,050  
Retainage22,070  19,835  
134,364  140,885  
Allowance for doubtful accounts(1,278) (1,003) 
Contracts receivable including retainage, net$133,086  $139,882