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Contracts Receivable Including Retainage, Net
 6 Months Ended
Mar. 31, 2024
Contractors [Abstract]  
Contracts Receivable Including Retainage, Net Contracts Receivable Including Retainage, Net
Contracts receivable including retainage, net consisted of the following at March 31, 2024 and September 30, 2023 (in thousands):
March 31, 2024September 30, 2023
(unaudited)
Contracts receivable$225,888 $251,324 
Retainage receivable50,844 53,286 
276,732 304,610 
Allowance for doubtful accounts(1,162)(906)
Contracts receivable including retainage, net$275,570 $303,704 
Retainage receivable has been billed and the Company has an unconditional right to payment, but such payment is not due until satisfactory contract completion and acceptance by the customer.