Subsequent Event - Additional Information (Details) - Subsequent Event $ in Millions	Apr. 28, 2020 USD ($)
Subsequent Event [Line Items]
Percentage of common stock held	24.00%
Adicet
Subsequent Event [Line Items]
Contract termination fee	$ 6.1

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