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Income Taxes - Tax Effects of Temporary Differences that Give Rise to Significant Portion of Deferred Tax Assets and Deferred Tax Liabilities (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Deferred tax assets (liabilities): |  |  |
Reserves and allowances |  | $ 6,161 | $ 5,521
Accrued expenses |  | 8,103 | 8,977
Net operating losses |  | 142,708 | 58,813
Research and development tax credit |  | 53,472 | 30,138
Stock-based compensation |  | 16,621 | 13,584
Prepaid expenses |  | (1,674) | (1,365)
Property and equipment |  | (21,924) | (14,375)
Intangibles | [1] | 219,492 | 184,965
Capitalized software development costs |  | (3,565) | (2,836)
Operating lease assets |  | (46,435) | (55,685)
Operating lease liabilities |  | 56,415 | 64,359
Other |  | 484 | 487
Valuation allowance |  | (361,614) | (242,415)
Total deferred tax assets, net |  | $ 68,244 | $ 50,168
[1] | As of December 31, 2021 and 2020, includes intangibles associated with our international restructuring, net of amortization, offset by a reserve for uncertain tax position. See discussion below.

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