STOCK-BASED COMPENSATION - Schedule of stock-based compensation expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Stock-Based Compensation (Details) [Line Items]
Total stock-based compensation expense	$ 166	$ 224
Research and development
Stock-Based Compensation (Details) [Line Items]
Total stock-based compensation expense	4	1
Selling, general and administrative
Stock-Based Compensation (Details) [Line Items]
Total stock-based compensation expense	$ 162	$ 223