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Equity Incentive Plans - Summary of Stock-Based Compensation Expense (Detail) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Total stock-based compensation expense | $ 4,607 | $ 4,252
Research and Development [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Total stock-based compensation expense | 2,251 | 1,959
General and Administrative [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Total stock-based compensation expense | $ 2,356 | $ 2,293

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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