INCOME TAXES - Components of income taxes (Details) - USD ($)	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Federal
Current	$ 267,020	$ 162,194
Deferred	(62,807)	(208,258)
Total	204,213	(46,064)
State
Current	86,889	12,728
Deferred	(14,102)	1,217
Total	72,787	13,945
Total income tax expense	$ 277,000	$ (32,119)