DEBT - Long-Term Debt (Details)	12 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($) item
Long-term obligations
Long-term debt	$ 8,979,569	$ 5,615,467
Less current maturities	(1,595,309)	(561,202)
Long-term debt less current maturities	7,384,260	5,054,265
3.625% Real Estate Loan
Long-term obligations
Long-term debt		$ 4,498,213
Fixed interest rate (as a percent)		3.625%
Periodic installments of principal and interest		$ 47,399
Number of owned distribution facilities which collateralize debt instrument | item		3
4.50% Unsecured Note Payable
Long-term obligations
Long-term debt	$ 968,589	$ 1,117,254
Fixed interest rate (as a percent)	4.50%	4.50%
Periodic installments of principal and interest	$ 49,114	$ 49,114
4.10% Note Payable
Long-term obligations
Long-term debt	$ 5,572,766
Fixed interest rate (as a percent)	4.10%
Periodic installments of principal and interest	$ 53,361
3.25% Note Payable
Long-term obligations
Long-term debt	$ 2,052,327
Fixed interest rate (as a percent)	3.25%
Periodic installments of principal and interest	$ 17,016
2.90% Note Payable
Long-term obligations
Long-term debt	$ 385,887
Fixed interest rate (as a percent)	2.90%
Periodic installments of principal and interest	$ 7,934