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INCOME TAXES - Schedule of Net Deferred Income Tax Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Income Tax Disclosure [Abstract] |  |
Net operating loss carryforwards | $ 35,141 | $ 45,084
Research and development tax credits | 409 | 16,184
Capitalized research and development expenses | 53,477 | 78,413
Stock-based compensation | 7,667 | 7,558
Operating lease liability | 4,620 | 5,068
Accrued expenses | 1,447 | 2,626
Other | 79 | 269
Total deferred tax assets | 102,840 | 155,202
Valuation allowance | (97,991) | (150,037)
Net deferred tax assets | 4,849 | 5,165
Deferred tax liability |  |
Operating lease right-of-use asset | (4,608) | (5,165)
Other | (241) |
Net deferred tax assets | $ 0 | $ 0

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