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Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Deferred income tax assets |  |
Net operating loss carry forwards | $ 41,561 | $ 48,317
Research and development expenses | 6,953 | 5,100
Intangibles | 4,643 | 4,907
Credit carry forwards | 2,479 | 3,028
Nondeductible accruals | 405 | 453
163j limitation | 87 | 333
Fixed assets | 346 | 289
Equity-based compensation | 404 | 188
Deferred rent | 12 | 15
State taxes | 1,515 | 3
Total deferred income tax assets - net | 58,405 | 62,633
Deferred income tax liabilities |  |
Prepaid expenses | (82) | (92)
Unrealized translation gain/loss | (6) | (21)
Total deferred income tax liabilities - net | (88) | (113)
Valuation allowance | (58,485) | (62,698)
Net deferred income tax liabilities | $ (168) | $ (178)

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