PREFERRED STOCK AND DETACHABLE WARRANTS (Tables)

6 Months Ended

Jun. 30, 2020

Equity [Abstract]

Summary of temporary equity

The following table represents the activity related to the Series B Preferred Stock, classified as Temporary Equity on the accompanying unaudited consolidated balance sheet, during the six months ended June 30, 2020 and 2019:

	2020		2019
Balance at beginning of period	$	11,006,406	$	8,900,208
Plus: discount accretion	854,364		666,048
Plus: dividends in kind	358,512		337,798
Balance at end of period	$	12,219,282	$	9,904,054

The following table represents the activity related to the Series B1 Preferred Stock, classified as Temporary Equity on the accompanying unaudited consolidated balance sheet, for the six months ended June 30, 2020 and 2019:

	2020			2019
Balance at beginning of period	$	12,743,047		$	13,279,755
Less: conversions of shares to common	(3,368,474		)	(119,768		)
Plus: discount accretion	616,874			472,000
Plus: dividends in kind	375,177			397,310
Balance at end of period	$	10,366,624		$	14,029,297

Schedule of liabilities with unobservable inputs

The following is an analysis of changes in the derivative liability for the six months ended June 30:

Level Three Roll-Forward
	2020			2019
Balance at beginning of period	$	1,969,216		$	1,481,692
Change in valuation of warrants	(1,587,782		)	959,077
Balance at end of period	$	381,434		$	2,440,769