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Stockholders' Equity - Outstanding and Reserved Shares of Common Stock for Future Issuance (Detail) - shares | Dec. 31, 2022 | Dec. 31, 2021
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Class of Stock [Line Items] |  |
Options outstanding (in shares) | 1,237,000 | 1,305,000
Total reserved shares of common stock for future issuance (in shares) | 22,327,000 |
2012 Equity Incentive Plan |  |
Class of Stock [Line Items] |  |
Total reserved shares of common stock for future issuance (in shares) | 5,312,000 |
2012 Employee Stock Purchase Plan |  |
Class of Stock [Line Items] |  |
Total reserved shares of common stock for future issuance (in shares) | 8,996,000 |
2022 New-Hire Equity Incentive Plan |  |
Class of Stock [Line Items] |  |
Total reserved shares of common stock for future issuance (in shares) | 1,045,000 |
Common stock options |  |
Class of Stock [Line Items] |  |
Options outstanding (in shares) | 1,237,000 |
RSUs |  |
Class of Stock [Line Items] |  |
RSUs (in shares) | 5,737,000 | 5,808,000

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