Commitments, Contingencies, and Uncertainties/COVID-19 Pandemic - Additional Information (Detail) $ in Thousands	Dec. 31, 2020 USD ($)
Small Business Administration [Member] \| Coronavirus Aid Relief and Economic Security Act [Member] \| Paycheck Protection Program [Member]
Commitments Contingencies And Uncertainties Covid Nineteen Pandemic [Line Items]
Debt instrument face amount	$ 2,949,000

Face (par) amount of debt instrument at time of issuance.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant