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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Related-Party Transactions (Details) - USD ($)	3 Months Ended
Related-Party Transactions (Details) - USD ($)	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Investor \| Pharmaceutical Products Development, LLC
Related Party Transaction [Line Items]
Revenue from related parties	$ 2,300,000	$ 4,400,000
Accounts receivable, related parties	1,900,000		$ 2,000,000.0
Investor \| AlloVir
Related Party Transaction [Line Items]
Accounts receivable, related parties	$ 12,100		$ 27,300
Affiliated Entity \| Novartis Pharma AG
Related Party Transaction [Line Items]
Revenue from related parties		$ 100,000
Affiliated Entity \| Novartis Pharma AG \| dRX Capital AG
Related Party Transaction [Line Items]
Ownership percentage	50.00%