Subsequent Events - Additional Information (Detail) - Subsequent Event	Jul. 22, 2020
Subsequent Event [Line Items]
Rights agreement outstanding common stock acquisition percentage description	20% or more
Rights agreement common stock holding percentage description	4.9% or more

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