STOCK OPTIONS AND WARRANTS - Transactions involving stock options issued to employees (Details) - Options - Incentive Stock Plan 2005 [Member]	12 Months Ended
	Sep. 30, 2021 USD ($) $ / shares shares
Number of Shares
Outstanding at October 1, 2020 | shares	320,990
Granted | shares	203,405
Exercised | shares	30,955
Cancelled or expired | shares	6,063
Outstanding at September 30, 2021 | shares	487,377
Vested at September 30, 2021 | shares	478,627
Non-vested at September 30, 2021 | shares	8,750
Weighted Average Exercise Price Per Share
Outstanding at October 1, 2020 | $ / shares	$ 57.75
Granted | $ / shares	6.15
Exercised | $ / shares	4.39
Cancelled or expired | $ / shares	(5.01)
Outstanding at September 30, 2021 | $ / shares	40.26
Vested at September 30, 2021 | $ / shares	40.90
Non-vested at September 30, 2021 | $ / shares	$ 5.46
Aggregate Intrinsic Value, Vested | $	$ 0
Aggregate Intrinsic Value, Non-vested | $	$ 0
Weighted Average Contractual Life (years), Vested	7 years 6 months 14 days
Weighted Average Contractual Life (years), Non -vested	8 years 8 months 15 days