Business Segment, Geographic Area, Product/Service Offerings and Significant Customer Information - Schedule of Net Revenues and Long-Lived Assets by Geographic Regions (Parenthetical) (Detail)	Dec. 31, 2020 Location
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of locations with increase in right-of-use assets	3

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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