Commitments and Contingencies - Additional Information 1 (Details)	Sep. 30, 2020 USD ($)
License Agreement with Salk Institute \| Maximum
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Milestone payments payable	$ 6,500,000

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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