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Property, Equipment and Leasehold Improvements - Schedule of Property, Equipment and Leasehold Improvements (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Property Plant And Equipment [Line Items]
Property, equipment and leasehold improvements, gross	$ 31.0	$ 30.0
Less: accumulated depreciation and amortization	(17.6)	(16.6)
Property, equipment and leasehold improvements, net	13.4	13.4
Laboratory equipment
Property Plant And Equipment [Line Items]
Property, equipment and leasehold improvements, gross	17.4	17.1
Leasehold improvements
Property Plant And Equipment [Line Items]
Property, equipment and leasehold improvements, gross	11.4	10.9
Office equipment
Property Plant And Equipment [Line Items]
Property, equipment and leasehold improvements, gross	$ 2.2	$ 2.0

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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