CONVERTIBLE NOTES - Summary of recorded interest expense and discount accretion (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Debt Instrument [Line Items]
Change in fair value of derivative	$ 51,619	$ 39,447	$ 103,238	$ 49,037
January 2014 [Member]
Debt Instrument [Line Items]
Change in fair value of derivative	0	0	0	479
2019 Notes [Member]
Debt Instrument [Line Items]
Change in fair value of derivative	$ 51,619	$ 39,447	$ 103,238	$ 48,558