PREFERRED STOCK AND DETACHABLE WARRANTS - Activity in Preferred Stock (Details) - USD ($)	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Increase (Decrease) in Temporary Equity
Balance at beginning of period			$ 28,146,347				$ 28,146,347
Plus: discount accretion	$ 29,157	$ 539,235	932,003	$ 550,774	$ 532,925	$ 560,675
Balance at end of period	52,903,491						52,903,491
Series B Preferred Stock
Increase (Decrease) in Temporary Equity
Balance at beginning of period			11,006,406			8,900,208	11,006,406	$ 8,900,208
Plus: discount accretion							854,364	1,031,483
Plus: dividends in kind	188,837			175,305			547,349	510,502
Balance at end of period	12,408,119			10,442,193			12,408,119	10,442,193
Series B1 Preferred Stock
Increase (Decrease) in Temporary Equity
Balance at beginning of period			$ 12,743,047			$ 13,279,755	12,743,047	13,279,755
Less: conversions of shares to common							(3,368,474)	(119,768)
Plus: discount accretion							646,031	582,649
Plus: dividends in kind	171,380			240,185			546,557	712,185
Balance at end of period	$ 10,567,161			$ 14,454,821			$ 10,567,161	$ 14,454,821