STOCKHOLDERS' EQUITY - Intrinsic value (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) $ / shares shares
Options Outstanding
Aggregate Intrinsic Value | $	$ 3,883,000
Options Exercisable
Number Exercisable at September 30, 2021 | shares	3,891,132
Weighted Average Exercise Price	$ 6.45
Aggregate Intrinsic Value | $	$ 166,383
$2.65 - $14.50
Options Outstanding
Range of Exercise Price, Lower Range Limit	$ 2.65
Range of Exercise Price, Upper Range Limit	$ 14.50
Number Outstanding at September 30, 2021 | shares	6,885,978
Weighted Average Exercise Price	$ 7.09
Weighted Average Remaining Life (Years)	7 years 1 month 24 days
Aggregate Intrinsic Value | $	$ 166,383