INCOME TAXES - Summary of income tax effects of temporary differences giving rise to the deferred tax assets and liabilities (Details) - USD ($)	Jun. 30, 2022	Sep. 30, 2021
Deferred income tax liabilities
Property and equipment	$ 4,980,722	$ 4,883,398
Other	2,863	37,582
Total deferred tax liabilities	4,983,585	4,920,980
Deferred income tax assets
Other	314,633	358,400
Net operating loss carryforward	1,790,303	2,529,147
Total deferred tax liabilities	2,104,936	2,887,547
Total net deferred tax liabilities	$ 2,878,649	$ 2,033,433