Annual report pursuant to Section 13 and 15(d)

Related Parties - Schedule of Related Party Transactions (Details)

v3.23.3
Related Parties - Schedule of Related Party Transactions (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2021
Related Party Transaction [Line Items]      
Revenues $ 1,563,548 $ 1,301,674 $ 910,739
Cost of revenues 1,367,163 1,162,372 790,803
Expense incurred 126,947 107,562 91,878
Related Party | Purchaser of subsidiary      
Related Party Transaction [Line Items]      
Revenues 0 0 0
Accounts receivable 311 414  
Related Party | Disposed entity      
Related Party Transaction [Line Items]      
Revenues 0 0 0
Accounts receivable 198 264  
Related Party | Land Development Project      
Related Party Transaction [Line Items]      
Revenues 0 0 0
Accounts receivable 632 712  
Related Party | Subcontracting Services      
Related Party Transaction [Line Items]      
Cost of revenues 8,627 8,655 9,385
Accounts payable (593) (695)  
Related Party | Island Pond      
Related Party Transaction [Line Items]      
Expense incurred 340 320 320
Accounts payable 0 0  
Related Party | SunTx      
Related Party Transaction [Line Items]      
Expense incurred 1,486 1,451 $ 1,935
Accounts payable $ 0 $ 0