Annual report pursuant to Section 13 and 15(d)

ORGANIZATION AND DESCRIPTION OF BUSINESS (Details)

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ORGANIZATION AND DESCRIPTION OF BUSINESS (Details)
$ in Thousands
1 Months Ended 12 Months Ended
Feb. 11, 2020
USD ($)
Feb. 29, 2020
USD ($)
Dec. 31, 2019
USD ($)
Patent
Dec. 31, 2018
USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Accumulated deficit     $ 122,492 $ 92,564
Net loss     (29,928) (24,816)
Cash used in operating activities     21,900  
Existing cash balances and investments     $ 10,700  
Number of developed intellectual property patents | Patent     200  
Number of Developed Technology Patents | Patent     40  
Subsequent Event [Line Items]        
Net proceeds from the sale of common stock from underwritten public offering     $ 0 $ 21,190
Subsequent Event        
Subsequent Event [Line Items]        
Net proceeds from the sale of common stock from underwritten public offering $ 26,300 $ 26,300