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Description of Business and Basis of Presentation (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Aug. 31, 2021	Jun. 30, 2021
Unusual Risk or Uncertainty [Line Items]
Accumulated deficit generated, since inception		$ (151,548)
Forecast | Ipsen Collaboration
Unusual Risk or Uncertainty [Line Items]
Proceeds from Collaborators	$ 20,000
COVID-19
Unusual Risk or Uncertainty [Line Items]
Percentage of R&D staff on site		100.00%
Percentage of time that office and general and administrative staff are on site		50.00%

X

- Definition

Cash received from collaborators during the current period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3536-108585

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Office And General And Administrative Staff On Site, Percentage

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Research and Development Staff on Site, Percentage

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Retained Earnings (Accumulated Deficit), Inception to Date

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