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Balance Sheet Components - Property and Equipment, Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Property and Equipment, net
Total property and equipment, gross	$ 26,179		$ 26,179		$ 25,525
Less: Accumulated depreciation and amortization	(7,121)		(7,121)		(4,557)
Total property and equipment, net	19,058		19,058		$ 20,968
Depreciation and amortization	$ 900	$ 800	$ 2,600	$ 2,300
Leasehold improvements
Property and Equipment, net
Property, Plant, and Equipment, Useful Life, Term, Description [Extensible Enumeration]	us-gaap:UsefulLifeShorterOfTermOfLeaseOrAssetUtilityMember		us-gaap:UsefulLifeShorterOfTermOfLeaseOrAssetUtilityMember		us-gaap:UsefulLifeShorterOfTermOfLeaseOrAssetUtilityMember
Total property and equipment, gross	$ 17,655		$ 17,655		$ 17,618
Laboratory equipment
Property and Equipment, net
Estimated Useful Life (in years)	5 years		5 years		5 years
Total property and equipment, gross	$ 5,844		$ 5,844		$ 5,227
Furniture and fixtures
Property and Equipment, net
Estimated Useful Life (in years)	5 years		5 years		5 years
Total property and equipment, gross	$ 1,709		$ 1,709		$ 1,709
Computer equipment
Property and Equipment, net
Estimated Useful Life (in years)	5 years		5 years		5 years
Total property and equipment, gross	$ 896		$ 896		$ 896
Capitalized software
Property and Equipment, net
Estimated Useful Life (in years)	3 years		3 years		3 years
Total property and equipment, gross	$ 75		$ 75		$ 75

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- 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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