WARRANTS, UNDERWRITTEN PUBLIC OFFERING JUNE 2018 (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018	Apr. 16, 2018	Dec. 31, 2017
Warrants to purchase common stock issued and outstanding
Common stock, par value (in dollars per share)	$ 0.00001	$ 0.00001	$ 0.00001	$ 0.00001
Proceeds from issuance of common stock and warrants, net of issuance costs		$ 16,511
2018 Series B Warrant Exercise price $.01
Warrants to purchase common stock issued and outstanding
Exercise price (in dollars per unit)	$ 0.01	$ 0.01
Underwritten Public Offering, June 2018
Warrants to purchase common stock issued and outstanding
Proceeds from issuance of common stock and warrants, net of issuance costs	$ 13,500
Underwritten Public Offering, June 2018 | 2018 Series B Warrant Exercise price $.01
Warrants to purchase common stock issued and outstanding
Exercise price (in dollars per unit)	$ 0.01	0.01
Warrant Expiration Term (in years)	20 years
Underwritten Public Offering, June 2018 | Common Stock
Warrants to purchase common stock issued and outstanding
Number of shares/warrants comprised in a unit (in shares)	1
Common stock, par value (in dollars per share)	$ 0.00001	$ 0.00001
Number of shares of common stock to be purchased by each warrant	1	1
Underwritten Public Offering, June 2018 | Common Stock | 2018 Series B Warrant Exercise price $.01
Warrants to purchase common stock issued and outstanding
Number of shares issued (in shares)		1,050,918
Underwritten Public Offering, June 2018 | Common Stock And Warrants
Warrants to purchase common stock issued and outstanding
Number of shares issued (in shares)	1,378,400
Equity issuance (in price per unit)	$ 2.00	$ 2.00
Pre Funded Units
Warrants to purchase common stock issued and outstanding
Number of shares issued (in shares)	6,242,811
Equity issuance (in price per unit)	$ 1.99	$ 1.99
Pre Funded Units | 2018 Series B Warrant Exercise price $.01
Warrants to purchase common stock issued and outstanding
Number of shares/warrants comprised in a unit (in shares)	1
Pre Funded Units | Common Stock
Warrants to purchase common stock issued and outstanding
Number of shares of common stock to be purchased by each warrant	1	1