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STOCK-BASED COMPENSATION, Stock-Based Compensation Expense (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Stock-Based Compensation Expense [Abstract]    
Stock-based compensation expense $ 689 $ 1,183
Research and Development [Member]    
Stock-Based Compensation Expense [Abstract]    
Stock-based compensation expense 64 422
General and Administrative [Member]    
Stock-Based Compensation Expense [Abstract]    
Stock-based compensation expense $ 625 $ 761