Subsequent Event - Additional Information (Detail) - Subsequent Event - Merger Agreement - Kuur Therapeutics, Inc.	May 04, 2021 USD ($)
Subsequent Event [Line Items]
Upfront payment to stockholders in common stock	$ 70,000,000.0
Maximum
Subsequent Event [Line Items]
Milestone payments receivable	$ 115,000,000.0

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration