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Stock-Based Compensation - Additional Information (Detail) - USD ($) $ in Millions |  | 12 Months Ended |
--- | --- | --- | ---
Aug. 31, 2021 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Jan. 01, 2025
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |  |
Shares reserved for issuances |  | 73,863,844 | 82,654,698 |  |
Weighted-average remaining contractual term outstanding |  | 5 years 5 months 1 day |  |  |
Stock subject to repurchase related to stock options early exercised and unvested |  | 211,184 | 403,764 |  |
Stock repurchase program, remaining authorized repurchase amount |  | $ 0.4 | $ 0.8 |  |
Time Based Restricted Stock Units Rsu [Member] |  |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |  |
PSUs ,Granted |  | 1,064,518 | 566,389 | 81,134 |
Performance Based Restricted Stock Units [Member] |  |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |  |
PSUs ,Granted |  | 565,498 |  |  |
Dividend yield |  | 0.00% | 0.00% | 0.00% |
Target percentage of number of shares earned |  | 100.00% |  |  |
Performance Based Restricted Stock Units [Member] | Maximum [Member] |  |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |  |
Percentage of number of shares earned |  | 300.00% |  |  |
Share based compensation by share based award vesting term |  | 4 years |  |  |
Performance Based Restricted Stock Units [Member] | Minimum [Member] |  |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |  |
Percentage of number of shares earned |  | 0.00% |  |  |
Share based compensation by share based award vesting term |  | 2 years |  |  |
Stock Options [Member] |  |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |  |
Dividend yield |  | 0.00% | 0.00% | 0.00% |
2015 Equity Incentive Plan [Member] |  |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |  |
Weighted-average remaining contractual term outstanding |  | 10 years |  |  |
2015 Equity Incentive Plan [Member] | Maximum [Member] |  |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |  |
Share based compensation by share based award vesting term |  | 5 years |  |  |
2015 Equity Incentive Plan [Member] | Minimum [Member] |  |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |  |
Share based compensation by share based award vesting term |  | 4 years |  |  |
2021 Equity Incentive Plan [Member] |  |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |  |
Weighted-average remaining contractual term outstanding |  | 10 years |  |  |
Number of Shares Available for Grant |  | 22,532,379 |  |  |
Share based compensation arrangement by share based payment award cumulative annual increase percentage |  | 5.00% |  |  |
2021 Equity Incentive Plan [Member] | Subsequent Event [Member] |  |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |  |
Shares reserved for issuances |  |  |  |  | 14,532,010
2021 Equity Incentive Plan [Member] | Maximum [Member] |  |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |  |
Share based compensation by share based award vesting term |  | 4 years |  |  |
2021 Equity Incentive Plan [Member] | Minimum [Member] |  |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |  |
Share based compensation by share based award vesting term |  | 1 year |  |  |
Employee Stock Purchase Plan [Member] |  |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |  |
Shares reserved for issuances | 5,354,000 |  |  |  |
Number of shares issued under share based compensation |  | 0 |  |  |
Share Based Compensation Arrangement, Cumulative Annual Increase,Shares | 10,708,000 |  |  |  |
Share Based Compensation Arrangement, Cumulative Annual Increase Percentage Of fully Diluted Shares Of Common stock outstanding | 1.00% |  |  |  |
Percentage of discount to the lower of closing price on that day or the closing price on the first day of the offering period | 15.00% |  |  |  |

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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (e)(1) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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