This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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Value of new stock classified as temporary equity issued during the period.

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License and collaborations.

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Stock issued during period shares licensing payments in equity.

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Stock Issued During Period Shares Licensing Payments In Equity (value)

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Licenses and Collaborations - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 31, 2020	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
License and Collaborations [Line Items]
Research and development		$ 19,656	$ 3,564	$ 42,317	$ 9,731
Ares Agreement [Member] \| Ares Trading S A [Member]
License and Collaborations [Line Items]
Milestone payments paid							$ 25,000
Related party transaction, expenses from transactions with related party		500		2,200
Ares Agreement [Member] \| Ares Trading S A [Member] \| Achievement Of Specified BLA Filing Or Regulatory Approval Milestones [Member]
License and Collaborations [Line Items]
Milestone payments payable							$ 176,500
Ares Agreement [Member] \| Ares Trading S A [Member] \| Achievement Of Specified Commercial Milestones [Member]
License and Collaborations [Line Items]
Milestone payments payable								$ 515,000
Amplyx Agreement [Member]
License and Collaborations [Line Items]
Milestone payments payable						$ 2,000
Acquisition cost						5,000
Research and development		3,700		3,700		7,000
Reduction in contingent future development				7,000
Contingent milestone obligation accrued						$ 2,000
Company shares issued				5,700
Amplyx Agreement [Member] \| Amplyx And Novartis [Member] \| Achievement Of Various Clinical Development And Regulatory Milestones [Member]
License and Collaborations [Line Items]
Milestone payments payable		7,000		7,000
Novartis [Member] \| Amplyx And Novartis [Member] \| Achievement Of Various Clinical Development And Regulatory Milestones [Member]
License and Collaborations [Line Items]
Milestone payments payable		$ 62,000		$ 62,000
Series C [Member] \| Ares Agreement [Member] \| Ares Trading S A [Member]
License and Collaborations [Line Items]
Temporary equity stock shares issued during the period shares	22,171,553
Temporary equity issue price per share	$ 0.5918
Temporary equity shares issued during the period value	$ 13,100
Common Class A [Member]
License and Collaborations [Line Items]
Company shares issued				283,034