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 6 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2024
Mar. 31, 2023
Sep. 30, 2023
Related Party Transaction [Line Items]          
Revenues $ 371,427 $ 324,850 $ 767,932 $ 666,629  
Subcontracting Services (332,626) (298,570) (677,251) (609,853)  
Expense incurred (36,752) (31,989) (72,733) (61,714)  
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 540   540   632
Related Party | Subcontracting Services          
Related Party Transaction [Line Items]          
Subcontracting Services (705) (1,173) (2,618) (2,992)  
Accounts payable (247)   (247)   (593)
Related Party | Island Pond          
Related Party Transaction [Line Items]          
Expense incurred (100) (80) (200) (160)  
Accounts payable 0   0   0
Related Party | SunTx          
Related Party Transaction [Line Items]          
Expense incurred (451) $ (359) (882) $ (726)  
Accounts payable $ 0   $ 0   $ 0