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Income Taxes - Income Taxes Effect of Each Type of Temporary Difference Comprising Net Differed Tax Asset (Detail) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Deferred tax assets: |  |
Net operating losses | $ 166,405 | $ 154,086
Stock-based compensation | 12,451 | 9,929
Tax credits | 2,421 | 2,409
Lease liability | 1,837 | 1,971
Other reserves and accrued liabilities | 8,808 | 7,916
Gross deferred tax assets | 191,922 | 176,311
Less: valuation allowance | (187,562) | (171,793)
Total deferred tax assets | 4,360 | 4,518
Deferred tax liabilities: |  |
Depreciation and amortization | (2,985) | (3,050)
Lease asset | (1,375) | (1,468)
Total deferred tax liabilities | (4,360) | (4,518)
Net deferred tax assets | $ 0 | $ 0

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