Transactions between the Company and Related Parties - Related Party Transactions (Parenthetical) (Detail) - Bridgeview Facility [Member] $ in Thousands	12 Months Ended
Dec. 31, 2020 USD ($) ft²
Related Party Transaction [Line Items]
Lease of Bridgeview Facility \| ft²	40,000
Monthly lease payments \| $	$ 23

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