Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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+ Details

Related Party - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Sep. 30, 2021	Dec. 31, 2020
Related Party Transaction [Line Items]
Redeemable convertible preferred stock			0	0
Revenue—related party	$ 24,990	$ (3,981)
Regeneron Pharmaceuticals, Inc.
Related Party Transaction [Line Items]
Revenue—related party	$ 25,000
Regeneron Pharmaceuticals, Inc. \| Series B Convertible Preferred Stock [ Member ]
Related Party Transaction [Line Items]
Redeemable convertible preferred stock	883,568