Net Loss per Share - Additional Information (Detail) $ in Millions	12 Months Ended
Dec. 31, 2020 USD ($)
Series C Preferred Stock [Member]
Earnings Per Share [Line Items]
Accretion of beneficial conversion feature	$ 0.5

The amount of accretion of the preferred stock redemption discount during the period.

No definition available.

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