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

Warrants - Additional Information (Detail) - USD ($) $ in Thousands	Aug. 10, 2020	Dec. 31, 2019
Class of Warrant or Right [Line Items]
Common and preferred stock warrant liability		$ 8,919
ASC 815 [Member]
Class of Warrant or Right [Line Items]
Common and preferred stock warrant liability	$ 14,500