Organization and description of business - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Feb. 17, 2023	Dec. 31, 2022	Dec. 31, 2021
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Retained Earnings (Accumulated Deficit)		$ (378,324)	$ (316,102)
Subsequent Event [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Proceeds from common stock offering	$ 30,000
Common stock offering price	2.095%
Exercise price	$ 1.97
Net Proceeds from Common Stock and Warrants	$ 27,700
Sale of common stock in initial public offering, net of issuance costs, shares	14,320,000
Open Market Sale Agreement [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Proceeds from common stock offering		$ 3,800
Sale of common stock in initial public offering, net of issuance costs, shares		2.0
Proceeds from issuance of remaining common stock		$ 37,800
Open Market Sale Agreement [Member] | Jefferies L L C [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Maximum Offering Issuance And Sale Expense Covered In Company Securities		200,000
Registration Payment Arrangement, Maximum Potential Consideration		$ 50,000