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Balance Sheet Components - Schedule of Accrued Liabilities (Detail) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
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Balance Sheet Related Disclosures [Abstract] |  |
Accrued payroll and related expenses | $ 1,870 | $ 3,964
Accrued research and development expenses | 2,054 | 1,665
Accrued restructuring charges | 481 | 0
Accrued professional service fees | 432 | 638
Liability for early exercised stock options | 38 | 89
Other | 449 | 492
Accrued and other liabilities | $ 5,324 | $ 6,848

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- Definition Carrying value as of the balance sheet date of obligations, excluding pension and other postretirement benefits, incurred through that date and payable for perquisites provided to employees pertaining to services received from them. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.15(a)) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 + Details
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