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Related Party Transactions (Details) - USD ($)
12 Months Ended
Oct. 12, 2021
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2021
Nov. 08, 2021
Related Party Transaction [Line Items]          
Total debt   $ 242,667,000      
Face amount         $ 1,000,000
Proceeds from related party debt   0 $ 650,000 $ 0  
Accounts payable   6,111,000 5,482,000    
Ed Anakar and Nourdean Anakar | Related Party          
Related Party Transaction [Line Items]          
Proceeds from related party debt $ 500,000        
Allen Chhay and Bradley Chhay | Related Party          
Related Party Transaction [Line Items]          
Proceeds from related party debt 150,000        
Nottingham Creations and Sherwood Forest Creations LLC          
Related Party Transaction [Line Items]          
Related party transaction, amounts of transaction   195,000 207,000 118,000  
Nottingham Creations and Sherwood Forest Creations LLC | Related Party          
Related Party Transaction [Line Items]          
Accounts payable   10,700 92,808    
TW Mechanical LLC          
Related Party Transaction [Line Items]          
Related party transaction, amounts of transaction   9,430 133,000 425,000  
TW Mechanical LLC | Related Party          
Related Party Transaction [Line Items]          
Accounts payable   $ 0 9,338    
Ownership percentage   50.00%      
TW Mechanical LLC | Related Party | Third-Party General Contractor          
Related Party Transaction [Line Items]          
Related party transaction, amounts of transaction   $ 443,295 3,809 $ 0  
Commercial Bank Indebtedness          
Related Party Transaction [Line Items]          
Total debt   $ 119,200,000 $ 115,100,000    
Unsecured Debt          
Related Party Transaction [Line Items]          
Face amount $ 17,000,000