STOCKHOLDERS' EQUITY (Series C Preferred Stock) (Details) - USD ($)				1 Months Ended		12 Months Ended
	Nov. 02, 2017	Jun. 29, 2017	Apr. 28, 2017	Nov. 30, 2017	Aug. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Apr. 16, 2019	Nov. 06, 2017
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)						$ 0.01	$ 0.01
Shares callable by warrant (in shares)								1,966,275
Proceeds from Issuance of preferred stock				$ 2,800,000			$ 7,784,000
Number of shares converted (in shares)					1,735,419
Preferred stock, shares authorized (in shares)						15,000,000	15,000,000
Preferred stock, shares outstanding (in shares)						47	4,935
Preferred stock, shares issued (in shares)						47	4,935
Aegis
Class of Stock [Line Items]
Share price (in dollars per share)					$ 1,000
Common Stock
Class of Stock [Line Items]
Shares callable by warrant (in shares)					400
Stock rights issued (in shares)					856,446
Exercise price (in dollars per share)		$ 7.50
Number of shares converted (in shares)		5,352,847
Series C Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)									$ 0.01
Warrants outstanding (in shares)				1,962,857
Exercise price (in dollars per share)				$ 1.63
Warrant unit value (per unit)				$ 1,000
Proceeds from Issuance of preferred stock				$ 2,748,000
Number of shares converted (in shares)						2,548	142,857
Preferred stock, shares authorized (in shares)						2,748	2,748		2,748
Preferred stock, shares outstanding (in shares)						0	2,548
Preferred stock, shares issued (in shares)							2,748
Preferred Stock, Liquidation Preference Per Share				$ 1,000
Common stock issued on conversion of preferred shares						3,345,334
Preferred shares converted							200
Conversion of Stock, Shares Issued							142,857
Placement Agreement | Series C Preferred Stock [Member]
Class of Stock [Line Items]
Shares sold in offering (in shares)	2,748
Conversion price (in dollars per share)						$ 1.40	$ 1.40
2018 Purchase Agreement | Series C Preferred Stock [Member]
Class of Stock [Line Items]
Conversion price (in dollars per share)						$ 1.04
2018 Purchase Agreement | Series C Preferred Stock [Member] | Deemed Dividend E
Class of Stock [Line Items]
Beneficial conversion feature						$ 800,000
Public Stock Offering
Class of Stock [Line Items]
Shares sold in offering (in shares)					6,000
Sale of stock, number of warrants per unit (in shares)			1		1
Proceeds from Issuance of preferred stock					$ 6,000,000
Beneficial conversion feature on warrants				$ 1,200,000	$ 2,300,000
Public Stock Offering | Series C Preferred Stock [Member]
Class of Stock [Line Items]
Proceeds from Issuance of preferred stock				$ 1,500,000