New Accounting Pronouncements - Additional Information (Detail)	6 Months Ended
Jun. 30, 2020 USD ($)
Accounting Changes And Error Corrections [Abstract]
Cumulative-effect adjustment to retained earnings	$ 0

Amount of the related income tax effect of a cumulative effect on retained earnings.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22663-107794

Name:	us-gaap_CumulativeEffectOnRetainedEarningsTax1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration