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Contracts Receivable Including Retainage, Net
 6 Months Ended
Mar. 31, 2023
Contractors [Abstract]  
Contracts Receivable Including Retainage, Net Contracts Receivable Including Retainage, Net
Contracts receivable including retainage, net consisted of the following at March 31, 2023 and September 30, 2022 (in thousands):
March 31, 2023September 30, 2022
(unaudited)
Contracts receivable$198,876 $221,566 
Retainage44,923 44,253 
243,799 265,819 
Allowance for doubtful accounts(538)(612)
Contracts receivable including retainage, net$243,261 $265,207 
Retainage receivables have been billed, but are not due until contract completion and acceptance by the customer.