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Share-Based Compensation - Share Based Compensation Allocation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award
Total share-based compensation	$ 1,502	$ 4,245	$ 2,112	$ 15,786
Research and development
Share-based Compensation Arrangement by Share-based Payment Award
Total share-based compensation	556	2,183	(238)	10,450
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award
Total share-based compensation	946	2,062	2,350	5,423
Capitalized
Share-based Compensation Arrangement by Share-based Payment Award
Total share-based compensation	$ 0	$ 0	$ 0	$ (87)

X

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809

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-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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+ References

No definition available.

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