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STOCK-BASED COMPENSATION, Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands | 3 Months Ended
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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

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