Quarterly report pursuant to Section 13 or 15(d)

Related Parties - Schedule of Related Party Transactions (Details)

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Related Parties - Schedule of Related Party Transactions (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Sep. 30, 2023
Related Party Transaction [Line Items]          
Revenues $ 517,794 $ 421,893 $ 1,285,726 $ 1,088,522  
Subcontracting Services (434,302) (357,821) (1,111,553) (967,674)  
Expense incurred (38,928) (32,231) (111,661) (93,945)  
Related Party | Purchaser of Subsidiary          
Related Party Transaction [Line Items]          
Revenues 0 0 0 0  
Accounts receivable 311   311   $ 311
Related Party | Disposed Entity          
Related Party Transaction [Line Items]          
Revenues 0 0 0 0  
Accounts receivable 198   198   198
Related Party | Land Development Project          
Related Party Transaction [Line Items]          
Revenues 0 0 0 0  
Accounts receivable 545   545   632
Related Party | Subcontracting Services          
Related Party Transaction [Line Items]          
Subcontracting Services (2,596) (2,680) (5,214) (5,672)  
Accounts payable (398)   (398)   (593)
Related Party | Island Pond          
Related Party Transaction [Line Items]          
Expense incurred (100) (80) (300) (240)  
Accounts payable 0   0   0
Related Party | SunTx          
Related Party Transaction [Line Items]          
Expense incurred (523) $ (383) (1,405) $ (1,109)  
Accounts payable $ 0   $ 0   $ 0