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Share-based Compensation Expense - Share-based Compensation Allocation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award
Total share-based compensation	$ 2,864	$ 3,337	$ 7,948	$ 8,599
Research and development
Share-based Compensation Arrangement by Share-based Payment Award
Total share-based compensation	1,525	1,831	4,982	4,802
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award
Total share-based compensation	1,335	1,506	2,947	3,797
Capitalized
Share-based Compensation Arrangement by Share-based Payment Award
Total share-based compensation	$ 4	$ 0	$ 19	$ 0

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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- Definition

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+ References

No definition available.

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