Subsequent Events (Details) - Subsequent Event - Menarini Group $ in Millions	Jul. 23, 2020 USD ($)
Subsequent Event [Line Items]
License fee	$ 30.0
Maximum
Subsequent Event [Line Items]
Development and regulatory milestone payments receivable	20.0
Sales milestone payments receivable	$ 300.0

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.

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