INCOME TAXES - Summary of income tax effects of temporary differences giving rise to deferred tax liabilities (Details 1) - USD ($)	Dec. 31, 2018	Sep. 30, 2018
Deferred income tax liabilities Long-term
Property and equipment	$ (1,949,244)	$ (2,023,641)
Other	19,803	(4,639)
Total deferred income tax liabilities-LT	(1,929,441)	(2,028,280)
Deferred income tax assets
Other	677,976	699,905
Total deferred income tax assets	677,976	699,905
Total net deferred income tax liabilities	$ (1,251,465)	$ (1,328,375)