v3.22.2

Leases - Additional Information (Details) $ in Millions	1 Months Ended		3 Months Ended	6 Months Ended
	Apr. 30, 2018 ft²	May 31, 2015 ft²	Jun. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)
Lessee Lease Description [Line Items]
Lease expiration period		2022-05
Additional laboratory and office facilities under lease	6,378
Increased of leased premises	36,754
Lessee operating lease extended lease term	2026-11
Lease existence of option to extend		true
Lessee operating lease option to extend		5 years
Lease expense | $			$ 0.4	$ 0.9
Cash paid for operating lease liabilities | $				$ 1.1
Operating lease, weighted average remaining lease term			4 years 5 months 1 day	4 years 5 months 1 day
Operating lease, weighted average discount rate, percent			8.00%	8.00%
South San Francisco and California
Lessee Lease Description [Line Items]
Laboratory and office facilities under lease		30,376

X

- Definition

Additional square feet area of laboratory and office facilities under lease.

+ References

No definition available.

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- Definition

Increased area of leased premises.

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- Definition

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+ References

No definition available.

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- Definition

Operating lease expiration year.

+ References

No definition available.

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- Definition

Square feet area of laboratory and office facilities under lease.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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X

- Definition

Indicates (true false) whether lessee has option to extend operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918673-209980

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- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918673-209980

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- Definition

Amount of operating lease expense. Excludes sublease income.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 4
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918638-209977

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- Definition

Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Weighted average discount rate for operating lease calculated at point in time.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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-Publisher FASB
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