Subsequent Event (Additional Information) (Details) - BVF Partners L.P. - BVF Agreement - Subsequent Event $ in Millions	3 Months Ended
Dec. 31, 2021 USD ($)
Subsequent Event [Line Items]
Cash received from counterparty	$ 5
Option to provide additional funding	10
Maximum
Subsequent Event [Line Items]
Payment to be made for discovery and development of compounds	$ 15

Cash received from collaborators during the current period.

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=121586364&loc=d3e3536-108585

Name:	us-gaap_ProceedsFromCollaborators
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration