v3.26.1
Related Party Transactions (Details) - USD ($)
3 Months Ended 9 Months Ended
Jun. 30, 2026
Sep. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Related Party Transaction [Line Items]            
Long-term debt $ 242,149,000   $ 242,149,000   $ 242,149,000  
Accounts payable 6,457,000 $ 5,836,000 6,457,000   6,457,000  
Nottingham Creations and Sherwood Forest Creations LLC            
Related Party Transaction [Line Items]            
Related party transaction, amounts of transaction     3,793 $ 12,344 3,793 $ 19,098
TW Mechanical LLC            
Related Party Transaction [Line Items]            
Related party transaction, amounts of transaction     41,359 455 48,909 1,856
Related Party | Allen Chhay and Bradley Chhay            
Related Party Transaction [Line Items]            
Proceeds from related party debt 350,000 150,000        
Related Party | Nottingham Creations and Sherwood Forest Creations LLC            
Related Party Transaction [Line Items]            
Accounts payable 0 3,312 0   0  
Related Party | TW Mechanical LLC            
Related Party Transaction [Line Items]            
Accounts payable $ 801 0 $ 801   $ 801  
Related party, ownership percentage 50.00%   50.00%   50.00%  
Related Party | TW Mechanical LLC | Third-Party General Contractor            
Related Party Transaction [Line Items]            
Related party transaction, amounts of transaction     $ 0 $ 0 $ 0 $ 0
Commercial Bank Indebtedness            
Related Party Transaction [Line Items]            
Long-term debt $ 132,800,000 $ 139,600,000 $ 132,800,000   $ 132,800,000