WARRANT DERIVATIVE LIABILITY - Summary (Details) - USD ($)		1 Months Ended	3 Months Ended				6 Months Ended		12 Months Ended
	May 31, 2019	May 31, 2020	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Mar. 31, 2020
WARRANT DERIVATIVE LIABILITY
Common stock, shares issued			62,266,275				62,266,275		60,813,673
Exercise price of warrants										$ 1.00
Gain (loss) on warrant derivative liability			$ 102,761		$ (4,541)		$ (1,095,983)	$ 1,371,079
2019 Warrants
WARRANT DERIVATIVE LIABILITY
Proceeds from issuance of common stock and warrants	$ 3,000,000
Shares issued in cashless exercise of warrants				747,208
Common stock, shares issued	3,000,000
Number of warrants issued	3,000,000
Share price	$ 1.00
Exercise price of warrants									$ 1.30
Warrant exercise price, decrease (in dollars per share)		$ 0.45				$ 0.45			$ 0.3983
Common stock, other shares, outstanding			322,807			8,666,666	322,807		9,591,614
Warrants exercised				1,323,000
Adjustment to derivative liability				$ 1,523,117