PREFERRED STOCK AND DETACHABLE WARRANTS - Narrative (Details)	3 Months Ended
	Mar. 31, 2020 USD ($) $ / shares shares	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($) $ / shares shares
Class of Stock [Line Items]
Preferred stock, shares authorized	50,000,000		50,000,000
Preferred stock, par value (in dollars per share) | $ / shares	$ 0.001
Liabilities at fair value | $	$ 270,469		$ 1,969,216
Dividends payable | $	$ 344,499	$ 406,795
Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares authorized	5,000,000		5,000,000
Preferred stock, par value (in dollars per share) | $ / shares	$ 0.001		$ 0.001
Preferred stock, shares issued	419,859		419,859
Preferred stock, shares outstanding	419,859		419,859
Series B Preferred Stock
Class of Stock [Line Items]
Temporary equity, shares authorized	10,000,000		10,000,000
Temporary equity, shares issued	3,883,449		3,826,055
Temporary equity, shares outstanding	3,883,449		3,826,055
Temporary equity, warrants issued | $	$ 21
Dividends payable | $	180,591		$ 177,921
Dividends paid in kind | $	$ 177,921	167,642
Series B Preferred Stock | Liability
Class of Stock [Line Items]
Expected term (years)	1 year
Series B Preferred Stock | Liability | Expected Dividend Rate
Class of Stock [Line Items]
Warrant measurement input (as a percent)	0
Series B Preferred Stock | Liability | Risk Free Interest Rate
Class of Stock [Line Items]
Warrant measurement input (as a percent)	0.0017
Series B Preferred Stock | Liability | Minimum | Expected Volatility Rate
Class of Stock [Line Items]
Warrant measurement input (as a percent)	0.66
Series B Preferred Stock | Liability | Maximum | Expected Volatility Rate
Class of Stock [Line Items]
Warrant measurement input (as a percent)	1.00
Series B1 Preferred Stock
Class of Stock [Line Items]
Temporary equity, shares authorized	17,000,000		17,000,000
Temporary equity, shares issued	7,004,236		9,028,085
Temporary equity, shares outstanding	7,004,236		9,028,085
Temporary equity, warrants issued | $	$ 270,448
Dividends payable | $	163,908		$ 211,269
Dividends paid in kind | $	$ 211,269	$ 235,360
Series B1 Preferred Stock | Liability
Class of Stock [Line Items]
Expected term (years)	2 years
Series B1 Preferred Stock | Liability | Expected Dividend Rate
Class of Stock [Line Items]
Warrant measurement input (as a percent)	0
Series B1 Preferred Stock | Liability | Risk Free Interest Rate
Class of Stock [Line Items]
Warrant measurement input (as a percent)	0.0023
Series B1 Preferred Stock | Liability | Minimum | Expected Volatility Rate
Class of Stock [Line Items]
Warrant measurement input (as a percent)	0.66
Series B1 Preferred Stock | Liability | Maximum | Expected Volatility Rate
Class of Stock [Line Items]
Warrant measurement input (as a percent)	1.00