STOCK-BASED COMPENSATION - Schedule of stock-based compensation expense (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Stock-Based Compensation (Details) [Line Items]
Total stock-based compensation expense	$ 23	$ 91
Research and development
Stock-Based Compensation (Details) [Line Items]
Total stock-based compensation expense	2	3
Selling, general and administrative
Stock-Based Compensation (Details) [Line Items]
Total stock-based compensation expense	$ 21	$ 88

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details