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SHORT-TERM AND LONG-TERM DEBT - Summary of short-term and long-term debt (Details) - USD ($)
Sep. 30, 2025
Sep. 30, 2024
SHORT-TERM AND LONG-TERM DEBT    
Total debt $ 72,204,213 $ 33,853,583
Less current maturities 21,948,182 16,665,591
Total long-term debt 50,256,031 17,187,992
Line of credit payable to bank, final payment due by June 28, 2027    
SHORT-TERM AND LONG-TERM DEBT    
Total debt 24,750,000 4,500,000
Equipment line of credit, Final payment due February 2028    
SHORT-TERM AND LONG-TERM DEBT    
Total debt 5,878,041 7,802,313
Paycheck Protection Program loans from Small Business Administration    
SHORT-TERM AND LONG-TERM DEBT    
Total debt 10,401,366 10,292,676
Term note payable to United Bank, WV Pipeline acquisition, final payment due by March 25, 2026    
SHORT-TERM AND LONG-TERM DEBT    
Total debt 390,328 1,134,185
Notes payable to finance companies due October 2025 through September 2028    
SHORT-TERM AND LONG-TERM DEBT    
Total debt 5,415,401 1,787,009
Note payable to United Bank Tribute acquisition finance final payment due by December 2030    
SHORT-TERM AND LONG-TERM DEBT    
Total debt 14,164,413  
Notes payable to bank, final payment due November 2034    
SHORT-TERM AND LONG-TERM DEBT    
Total debt 710,466 762,670
Notes payable to bank, final payment due by October 2027    
SHORT-TERM AND LONG-TERM DEBT    
Total debt 1,411,890 2,024,847
Convertible equipment line of credit    
SHORT-TERM AND LONG-TERM DEBT    
Total debt 4,910,097  
Unsecured notes payable to Joe and Cathy Rigney, due September 30, 2030    
SHORT-TERM AND LONG-TERM DEBT    
Total debt 461,000  
Notes payable to David Bolton and Daniel Bolton due final payment December 31, 2025    
SHORT-TERM AND LONG-TERM DEBT    
Total debt 500,000 940,000
Note payable to United Bank, Tri-State Paving acquisition, final payment due by June 1, 2027    
SHORT-TERM AND LONG-TERM DEBT    
Total debt 2,961,211 4,359,883
Notes payable to Corns Enterprises, final payment due April 29, 2026    
SHORT-TERM AND LONG-TERM DEBT    
Total debt $ 250,000 $ 250,000