Quarterly report pursuant to Section 13 or 15(d)

ORGANIZATION AND DESCRIPTION OF BUSINESS (Liquidity and Capital Resources) (Details)

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ORGANIZATION AND DESCRIPTION OF BUSINESS (Liquidity and Capital Resources) (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Jan. 01, 2018
Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Accumulated deficit $ 85,691   $ 67,748 $ 67,812
Cash and cash equivalents 17,470 $ 13,530   19,524
Investments 8,884     $ 0
Proceeds from sale of common stock 21,190 $ 0    
Substantial doubt about going concern, management's evaluation, cash used in the period $ 14,600