PREFERRED STOCK AND TEMPORARY EQUITY -Summary of Temporary Equity (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at beginning of period	$ 22,959,945
Plus: discount accretion	1,960,013	$ 1,713,736
Balance at end of period	22,179,963	22,959,945
Series B Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at beginning of period	7,190,467	5,676,467
Less: conversions of shares to common	(62,962)	0
Plus: discount accretion	1,118,259	882,215
Plus: dividends in kind	654,444	631,785
Balance at end of period	8,900,208	7,190,467
Series B1 Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at beginning of period	15,769,478	13,927,788
Less: conversions of shares to common	(5,068,602)	(86,467)
Plus: discount accretion	841,754	798,548
Plus: dividends in kind	1,737,125	1,129,609
Balance at end of period	$ 13,279,755	$ 15,769,478