Quarterly report [Sections 13 or 15(d)]

Related Parties - Related Party Transactions (Details)

v3.25.2
Related Parties - Related Party Transactions (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Sep. 30, 2024
Related Party Transaction [Line Items]          
Revenues $ 779,277 $ 517,794 $ 1,912,507 $ 1,285,726  
Subcontracting Services (647,467) (434,302) (1,632,776) (1,111,553)  
Expense incurred (51,026) (37,987) (141,954) (109,422)  
Acquisition related costs 1,816 941 22,174 2,239  
Related Party          
Related Party Transaction [Line Items]          
Expense incurred (600)   (1,800)    
Acquisition related costs     800    
Related Party | Purchaser of Subsidiary          
Related Party Transaction [Line Items]          
Revenues 0 0 0 0  
Accounts receivable 207   207   $ 207
Related Party | Disposed Entity          
Related Party Transaction [Line Items]          
Revenues 0 0 0 0  
Accounts receivable 132   132   132
Related Party | Land Development Project          
Related Party Transaction [Line Items]          
Revenues 0 0 0 0  
Accounts receivable 548   548   548
Related Party | Subcontracting Services          
Related Party Transaction [Line Items]          
Subcontracting Services (4,466) (2,596) (7,584) (5,214)  
Accounts payable (730)   (730)   (239)
Related Party | Island Pond          
Related Party Transaction [Line Items]          
Expense incurred (100) (100) (300) (300)  
Accounts payable 0   0   0
Related Party | SunTx          
Related Party Transaction [Line Items]          
Expense incurred (453) $ (523) (2,291) $ (1,405)  
Accounts payable $ 0   $ 0   $ 0