Related Party Transactions - Summary of Expense Recognized by Support Services Agreement with COI (Details) - Support Services Agreement - COI Pharmaceuticals, Inc. - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Related Party Transaction [Line Items]
Expense recognized	$ 478	$ 651	$ 1,590	$ 1,709
Research and Development
Related Party Transaction [Line Items]
Expense recognized	416	432	1,325	1,071
General and Administrative
Related Party Transaction [Line Items]
Expense recognized	$ 62	$ 219	$ 265	$ 638

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

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