PREFERRED STOCK AND DETACHABLE WARRANTS (Tables)

6 Months Ended

Jun. 30, 2018

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 Consolidated Balance Sheet, during the six months ended June 30, 2018 and 2017:

	2018			2017
Balance at beginning of period	$	7,190,467		$	5,676,467
Less: conversions of shares to common	(62,973		)	—
Plus: discount accretion	525,664			419,196
Plus: dividends in kind	278,372			353,413
Balance at end of period	$	7,931,530		$	6,449,076

The following table represents the activity related to the Series B1 Preferred Stock, classified as Temporary Equity on the accompanying Consolidated Balance Sheet, for the six months ended June 30, 2018, and 2017:

	2018			2017
Balance at beginning of period	$	15,769,478		$	13,927,788
Less: conversions of shares to common	(754,766		)	(86,467		)
Plus: dividends-in-kind	683,044			568,697
Plus: discount accretion	403,014			391,129
Balance at end of period	$	16,100,770		$	14,801,147

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
	2018			2017
Balance at beginning of period	$	2,245,408		$	4,365,992
Change in valuation of warrants	(44,162		)	(1,305,441		)
Balance at end of period	$	2,201,246		$	3,060,551