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Schedule of Other Accrued Liabilities (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Payables And Accruals [Abstract] |  |
Professional and consulting services | $ 3,979 | $ 2,026
Manufacturing | 2,238 | 4,320
Clinical | 291 | 435
Other | 235 | 250
Total other accrued liabilities | $ 6,743 | $ 7,031

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