PREFERRED STOCK AND DETACHABLE WARRANTS - Changes in Derivative Liability (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	$ 1,969,216	$ 1,481,692
Change in valuation of warrants	(1,698,747)	1,705,094
Balance at end of period	$ 270,469	$ 3,186,786