Convertible Preferred Stock and Stockholders' Deficit - Stock-Based Compensation - Additional Information (Detail)	6 Months Ended
Jun. 30, 2021 USD ($)
Stockholders Equity Note [Abstract]
Unrecognized compensation expense related to stock options	$ 540,000
Unrecognized compensation cost related to unvested shares expected to be recognized, weighted-average period	1 year 10 months 24 days

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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 (i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration