Redeemable Convertible Preferred Shares - Additional Information (Detail) - USD ($)		1 Months Ended				12 Months Ended
	Jun. 01, 2021	Jun. 30, 2021	Feb. 28, 2021	Nov. 30, 2020	Dec. 31, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Temporary Equity [Line Items]
Carrying value							$ 91,964,000
Payments of Stock Issuance Costs	$ 17,000,000.0
Redeemable Convertible Preferred Stock [Member]
Temporary Equity [Line Items]
Common Stock Shares Issued As A Result Of Conversion Of Temporary Equity Into Permanent Equity		32,489,398
Temporary Equity, Shares Outstanding		0				0	22,851,257
Issuance of redeemable convertible preferred shares						9,638,141	10,348,505	10,348,507
Series A Redeemable Convertible Preferred Stock [Member]
Temporary Equity [Line Items]
Liquidation Value							$ 66,245,000
Temporary Equity, Shares Outstanding							22,851,257
Carrying value							$ 91,964,000
Issuance of redeemable convertible preferred shares					10,348,507
Temporary Equity Issue Price Per Share					$ 2.899			$ 2.899
Proceeds from redeemable convertible preferred stock					$ 30,000,000.0
Payments of Stock Issuance Costs					95,000,000
Payment Of Accrued Interest					$ 2,100,000
Debt Conversion, Converted Instrument, Shares Issued					2,154,245
Derivative liability at fair value					$ 1,500,000			$ 1,500,000
Series A Redeemable Convertible Preferred Stock [Member] | Milestone Achievement [Member]
Temporary Equity [Line Items]
Temporary Equity Stock Issued During The Period Shares New Issues				10,348,505				10,348,505
Temporary Equity Issue Price Per Share					$ 2.899			$ 2.899
Proceeds from redeemable convertible preferred stock				$ 30,000,000
Payments of Stock Issuance Costs				$ 22,000
Derivative liability at fair value						$ 0	0
Series A Redeemable Convertible Preferred Stock [Member] | Temporary Equity Related Tranche Liability [Member]
Temporary Equity [Line Items]
Derivative, Gain (Loss) on Derivative, Net							$ 30,000,000
Series B Redeemable Convertible Preferred Stock [Member]
Temporary Equity [Line Items]
Issuance of redeemable convertible preferred shares			9,638,141
Temporary Equity Issue Price Per Share			$ 13.488
Payments of Stock Issuance Costs			$ 243,000,000
Series B Redeemable Convertible Preferred Stock [Member] | Gross Proceeds [Member]
Temporary Equity [Line Items]
Proceeds from redeemable convertible preferred stock			$ 130,000,000
IPO [Member]
Temporary Equity [Line Items]
Stock Issued During Period, Shares, New Issues	11,500,000	11,500,000