CONVERTIBLE BRIDGE NOTES (Conversion and Settlement of New Bridge Notes) (Details) - USD ($)					1 Months Ended		12 Months Ended
	Sep. 17, 2018	Feb. 12, 2018	Jun. 29, 2017	Apr. 28, 2017	Aug. 31, 2017	Jul. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Apr. 16, 2019	Nov. 30, 2017	Oct. 31, 2017
Debt Instrument [Line Items]
Shares callable by warrant (in shares)									1,966,275
Proceeds from issuance of common stock							$ 2,008,000
Total debt							516,000	$ 3,416,000
Debt converted		$ 1,900,000					3,191,000
Number of shares converted from debt instrument (in shares)		1,814,754
Loss on extinguishment of debt and induced conversion of convertible bridge notes							1,328,000
Loss on extinguishment of debt related to unamortized discount							(376,000)	1,391,000
(Accretion) amortization of deferred financing costs, debt discounts and debt premiums							(21,000)	1,898,000
Convertible promissory notes
Debt Instrument [Line Items]
Debt instrument, face amount	$ 300,000,000,000
Debt converted	$ 2,800,000						2,200,000
Amortization for the next twelve months							100,000
Amortization of debt discount thereafter							$ 0
Number of shares converted from debt instrument (in shares)							4,373,439
Bridge Loan
Debt Instrument [Line Items]
Total debt				$ 2,436,551
Debt instrument, face amount				2,000,000
Redemption premium				$ 400,000
Premium rate changed upon settlement of debt				20.00%
Accrued interest				$ 36,551
Repayments of debt				1,536,551
Debt converted				$ 900,000	$ 900,000	$ 900,000
Loss on extinguishment of debt and induced conversion of convertible bridge notes							$ 1,000,000
Loss on extinguishment of debt related to unamortized discount							400,000
Bridge Loan | Convertible Bridge Loan
Debt Instrument [Line Items]
Total debt								$ 695,000
(Accretion) amortization of deferred financing costs, debt discounts and debt premiums							$ 1,900,000
Preferred Class B
Debt Instrument [Line Items]
Shares callable by warrant (in shares)					400
Share price (in dollars per share)				$ 1,000
Proceeds from issuance of common stock				$ 6,000,000
Conversion price (in dollars per share)					$ 2.50					$ 1.40	$ 2.50
Common Stock
Debt Instrument [Line Items]
Shares callable by warrant (in shares)					400
Number of shares converted from debt instrument (in shares)			1,414,700				3,787,300
Common Stock | Bridge Loan
Debt Instrument [Line Items]
Number of shares converted from debt instrument (in shares)				359,999	359,999	359,999
Conversion price (in dollars per share)				$ 2.50
Warrants issued on conversion (in shares)				359,999
Loss on extinguishment of debt and induced conversion of convertible bridge notes					$ 1,000,000
Common Stock | Bridge Loan | Convertible Bridge Loan
Debt Instrument [Line Items]
Accrued interest			$ 192,000
Debt converted			$ 695,000
Number of shares converted from debt instrument (in shares)			155,639
Public Stock Offering
Debt Instrument [Line Items]
Shares sold in offering (in shares)					6,000
Sale of stock, number of warrants per unit (in shares)				1	1
Public Stock Offering | Preferred Class B
Debt Instrument [Line Items]
Shares sold in offering (in shares)					6,000
Preferred Class B
Debt Instrument [Line Items]
Sale of stock, number of warrants per unit (in shares)					1