Leases - Additional Information (Details)	1 Months Ended			3 Months Ended		9 Months Ended
	Jul. 31, 2024 USD ($)	Sep. 30, 2023 USD ($)	Jan. 31, 2021 renewalOption	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)	Oct. 31, 2023 USD ($)	Dec. 31, 2021 USD ($)
Lessee Lease Description [Line Items]
Operating lease, monthly operating expense percentage	38.37%
Operating lease right-of-use assets				$ 28,700,000		$ 28,700,000		$ 30,997,000
Total lease liabilities				27,959,000		27,959,000
Operating lease rent expense recognized				3,300,000	$ 1,900,000	8,700,000	$ 5,800,000
New Corporate Headquarters Facility
Lessee Lease Description [Line Items]
Number of renewal options | renewalOption			2
Operating lease, renewal term			60 months
Operating lease, extended term			60 days
San Carlos
Lessee Lease Description [Line Items]
Operating lease right-of-use assets										$ 28,400,000
Total lease liabilities										$ 12,900,000
Assignment Agreement
Lessee Lease Description [Line Items]
Operating lease, agreement term	2 years	10 years			10 years		10 years
Assumed lease rental payment	$ 2,100,000	$ 1,900,000
Operating lease, rent adjustment percentage	0.03	0.03			0.03		0.03
Operating lease right-of-use assets	$ 4,600,000								$ 16,700,000
Total lease liabilities									$ 16,800,000
Lonza Commercial Manufacturing and Supply Agreement
Lessee Lease Description [Line Items]
Operating lease right-of-use assets				0		0
Total lease liabilities				$ 0		0
Operating lease rent expense recognized						$ 0