SHORT-TERM AND LONG-TERM DEBT - Summary of short-term and long-term debt (Details) - USD ($)	Jun. 30, 2022	Sep. 30, 2021
Debt Instrument [Line Items]
Total debt	$ 22,269,408	$ 17,462,598
Less current maturities	7,839,649	8,441,824
Total long term debt	14,429,759	9,020,774
Line of credit payable to bank, final payment due by June 28, 2022
Debt Instrument [Line Items]
Total debt	2,100,000	4,500,000
Notes payable to bank, monthly interest rate at 4.25%, final payment due January 2026
Debt Instrument [Line Items]
Total debt	2,713,375	3,000,000
Note payable to finance company for insurance premiums financed final due November 2022 in monthly installments
Debt Instrument [Line Items]
Total debt	1,408,341	540,250
Notes payable to bank, final due by November 2034
Debt Instrument [Line Items]
Total debt	880,522	919,017
Notes payable to bank, final due by November 2025
Debt Instrument [Line Items]
Total debt	442,198	530,750
Notes Payable To Banks Due July 2022 [Member]
Debt Instrument [Line Items]
Total debt		872,452
Notes payable to David and Daniel Bolton due final payment December 31, 2026
Debt Instrument [Line Items]
Total debt	2,372,500	2,850,000
Notes payable to bank final due by 25 March 2026
Debt Instrument [Line Items]
Total debt	2,695,331	3,183,549
Notes payable to finance companies due April 2022 through August 2026
Debt Instrument [Line Items]
Total debt	1,081,899	$ 1,066,580
Term note payable to United Bank, Tri-State Paving acquisition, final payment due by June 1, 2027
Debt Instrument [Line Items]
Total debt	7,293,787
Notes payable to Corns Enterprises, final payment due April 29, 2026
Debt Instrument [Line Items]
Total debt	938,667
Operating lease liability payable to third party, final payment due May 31, 2024
Debt Instrument [Line Items]
Total debt	124,041
Operating lease liability payable to Corns Enterprises, final payment due April 29, 2025
Debt Instrument [Line Items]
Total debt	$ 218,747