PREFERRED STOCK AND DETACHABLE WARRANTS (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Temporary Equity [Line Items]
Balance at beginning of period	$ 22,179,963
Plus: discount accretion	530,433	$ 457,853
Balance at end of period	22,993,630
Series B Preferred Stock
Temporary Equity [Line Items]
Balance at beginning of period	8,900,208	7,190,467
Plus: dividends in kind	167,642	139,186
Plus: discount accretion	322,671	254,069
Balance at end of period	9,390,521	7,583,722
Series B1 Preferred Stock
Temporary Equity [Line Items]
Balance at beginning of period	13,279,755	15,769,478
Less: conversions of shares to common	(119,768)	(595,563)
Plus: dividends in kind	235,360	281,527
Plus: discount accretion	207,762	203,784
Balance at end of period	$ 13,603,109	$ 15,659,226