PREFERRED STOCK AND DETACHABLE WARRANTS - Changes in Derivative Liability (Details) - USD ($)	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation
Balance at beginning of period	$ 330,412	$ 1,969,216
Value of warrants exercised	(3,453,504)	0
Change in valuation of warrants	23,287,535	(1,587,782)
Balance at end of period	$ 20,164,443	$ 381,434