STOCKHOLDERS EQUITY - Summary of warrants activity (Details)	9 Months Ended
	Sep. 30, 2021 USD ($) $ / shares shares
STOCKHOLDERS' EQUITY
Outstanding at the beginning	6,787,911
Issued	2,600,000
Exercised	(4,185,033)
Outstanding at the end	5,202,878
Exercisable at the end	5,202,878
Outstanding at the beginning (in dollars per share) | $ / shares	$ 1.25
Issued (in dollars per share) | $ / shares	2.50
Exercised (in dollars per share) | $ / shares	(1.24)
Outstanding at the end (in dollars per share) | $ / shares	$ 1.88
Exercisable at the end (in dollars per share)	1.88
Outstanding at the end (in years)	4 years 4 months 24 days
Exercisable at the end (in years)	4 years 4 months 24 days
Outstanding at the end (in dollars) | $	$ 2,158,307
Exercisable at the end (in dollars) | $	$ 2,158,307