Warrants - Summary of Warrant Activity (Detail)	9 Months Ended
Sep. 30, 2022 $ / shares shares
Warrants
Warrants outstanding, December 31, 2021	2,776,191
Expired	(155)
Exercises (see Note 8)	(1,760,870)
Warrants outstanding, September 30, 2022	1,015,166
Weighted Average Exercise Price \| $ / shares	$ 0.66
Weighted-Average Remaining Contractual Term (Years)	1 year 2 months 12 days

Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

Name:	us-gaap_WarrantsAndRightsOutstandingTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant