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Income Taxes - Schedule of Significant Components of Deferred Tax Assets (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Components Of Deferred Tax Assets And Liabilities [Abstract] |  |
Federal and state net operating loss carryforwards | $ 167,135 | $ 134,033
Tax credit carryforwards | 78,832 | 62,465
Foreign net operating loss carryforwards | 38,117 | 32,417
Stock-based compensation | 10,050 | 10,399
Lease obligations | 20,415 | 8,243
Reserves and accruals | 6,067 | 5,875
Deferred revenue | 20,101 | 13,550
Intangible assets | 84,625 | 75,915
Other | 825 | 0
Subtotal | 426,167 | 342,897
Less: Valuation allowance | (409,810) | (337,824)
Net deferred tax assets | 16,357 | 5,073
Fixed assets | (16,357) | (5,073)
Other | 0 | 0
Net deferred tax liabilities | (16,357) | (5,073)
Total net deferred tax assets | $ 0 | $ 0

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