Stock Based Compensation - Summary of Restricted Stock Unit Activity (Parenthetical) (Detail) - President and Chief Operating Officer [Member]	3 Months Ended
Mar. 31, 2021 shares
Share-based compensation arrangement by share-based payment award [Line Items]
Shares granted as a nonqualified stock option inducement award	7,998
Restricted stock [Member]
Share-based compensation arrangement by share-based payment award [Line Items]
Shares granted as a nonqualified stock option inducement award	998

The net total number of shares (or other type of equity) under an equity-based award plan, other than a stock option plan, that were granted, vested and forfeited during the reporting period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPeriodIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration