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Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Deferred tax assets [Abstract] |  |
Accrued expenses | $ 249 | $ 269
Share based compensation | 94 | 99
Net operating loss carryforwards | 15,412 | 13,397
Income tax credit carryforwards | 1,725 | 1,630
Property and equipment, net | 218 | 154
Intangible assets | 730 | 685
Capitalized R&D | 3,949 | 2,842
Other, net | 213 | 453
Total deferred tax assets | 22,590 | 19,529
Valuation allowance | (22,575) | (19,486)
Total deferred tax assets, net of allowance | 15 | 43
Deferred tax liabilities [Abstract] |  |
Other | (15) | (43)
Total deferred tax liability | (15) | (43)
Net deferred tax assets (liability) | $ 0 | $ 0

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