v3.25.4
Business Acquisitions - Assets Acquired and Liabilities Assumed (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 31, 2025
Sep. 30, 2025
Business Combination [Line Items]    
Goodwill $ 1,077,372 $ 943,309
2025 Acquisitions    
Business Combination [Line Items]    
Cash and cash equivalents 107  
Contracts receivable including retainage 15,242  
Cost and estimated earnings in excess of billings on uncompleted contracts 885  
Inventories 11,552  
Prepaid expenses and other current assets 37  
Property, plant and equipment 105,420  
Operating lease right-of-use assets 1,300  
Intangible assets 1,300  
Total assets 135,843  
Accounts payable 6,267  
Billings in excess of costs and estimated earnings on uncompleted contracts 10,209  
Accrued expenses and other current liabilities 500  
Operating lease liabilities 1,300  
Total liabilities 18,276  
Goodwill 134,060  
Total cash consideration transferred 196,572  
Fair value of Class A common stock transferred 51,459  
Total consideration (receivable) payable 3,596  
Total purchase price 251,627  
VMC    
Business Combination [Line Items]    
Cash and cash equivalents 0  
Contracts receivable including retainage 0  
Cost and estimated earnings in excess of billings on uncompleted contracts 88  
Inventories 10,801  
Prepaid expenses and other current assets 0  
Property, plant and equipment 59,647  
Operating lease right-of-use assets 1,300  
Intangible assets 1,000  
Total assets 72,836  
Accounts payable 0  
Billings in excess of costs and estimated earnings on uncompleted contracts 1,397  
Accrued expenses and other current liabilities 325  
Operating lease liabilities 1,300  
Total liabilities 3,022  
Goodwill 36,980  
Total cash consideration transferred 108,385  
Fair value of Class A common stock transferred 0  
Total consideration (receivable) payable (1,591)  
Total purchase price 106,794  
P&S    
Business Combination [Line Items]    
Cash and cash equivalents 107  
Contracts receivable including retainage 15,242  
Cost and estimated earnings in excess of billings on uncompleted contracts 797  
Inventories 751  
Prepaid expenses and other current assets 37  
Property, plant and equipment 45,773  
Operating lease right-of-use assets 0  
Intangible assets 300  
Total assets 63,007  
Accounts payable 6,267  
Billings in excess of costs and estimated earnings on uncompleted contracts 8,812  
Accrued expenses and other current liabilities 175  
Operating lease liabilities 0  
Total liabilities 15,254  
Goodwill 97,080  
Total cash consideration transferred 88,187  
Fair value of Class A common stock transferred 51,459  
Total consideration (receivable) payable 5,187  
Total purchase price $ 144,833