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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Research and Development Expense |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Cost of collaboration revenue | $ 1.4 | $ 1.3

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- Definition Cost of collaboration revenue. + References No definition available. + Details
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- Definition Summary of significant accounting policies. + References No definition available. + Details
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- Details
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Period Type: |