Balance Sheet Components - Components of Accrued Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Accrued Liabilities Current [Abstract]
General and administrative	$ 794	$ 1,577
Clinical trial related costs	1,134	1,743
Non-clinical research and manufacturing operations	2,153	4,321
Payroll related	5,388	4,908
Other accrued expenses	46	26
Total Accrued liabilities	$ 9,515	$ 12,575

Accrued clinical trial related costs, current.

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- Definition

Accruals related to general and administrative activities.

+ References

No definition available.

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- Definition

Accrued non-clinical research and manufacturing operations current.

+ References

No definition available.

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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- References

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- Definition

Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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- Definition

Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
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-Publisher FASB
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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