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INCOME TAXES - Summary of Significant Components of Net Deferred Tax Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Deferred tax assets: |  |
Net operating losses | $ 35,506 | $ 42,043
Tax credits | 9,747 | 9,327
Intangibles | 136 | 160
Capitalized R&D | 25,871 | 14,706
Stock compensation | 1,424 | 1,385
Lease liabilities | 1,112 | 275
Deferred revenue | 5,951 | 5,620
Accrued indirect tax liabilities | 4,114 | 2,617
Other | 725 | 1,018
Total deferred tax assets | 84,586 | 77,151
Less valuation allowance | (83,086) | (76,713)
Deferred tax assets, net of valuation allowance | 1,500 | 438
Deferred tax liabilities: |  |
Prepaid expenses | (214) | (189)
Capitalized inventory costs | (244) | 0
Right-of-use assets | (1,042) | (249)
Total deferred tax liabilities | (1,500) | (438)
Net deferred tax assets | $ 0 | $ 0

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