XML 62 R51.htm IDEA: XBRL DOCUMENT v3.21.1
SHARE-BASED COMPENSATION, SHARE-BASED COMPENSATION (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Stock options    
Stock-based compensation (in dollars) $ 52 $ 70
Expected term 10 years  
Vesting period 48 months  
Research and development    
Stock options    
Stock-based compensation (in dollars) $ 3 20
General and administrative    
Stock options    
Stock-based compensation (in dollars) 49 50
Stock Options    
Stock options    
Stock-based compensation (in dollars) 28 43
Restricted Securities    
Stock options    
Stock-based compensation (in dollars) $ 24 $ 27
Vesting period 3 years