STOCK-BASED COMPENSATION - Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Stock-based compensation
Stock based compensation expense	$ (136)	$ 2,240	$ (607)	$ 4,550
Research and development
Stock-based compensation
Stock based compensation expense		714		1,454
General and administrative
Stock-based compensation
Stock based compensation expense	$ (136)	$ 1,526	$ (607)	$ 3,096

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