Leases (Details) $ in Thousands	1 Months Ended		3 Months Ended
	Sep. 30, 2023 USD ($) ft²	Sep. 30, 2021 USD ($) ft²	Mar. 31, 2024 USD ($) ft² item lease	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)
Lessee, Lease, Description [Line Items]
Operating lease liabilities, current portion included in other accrued liabilities | $			$ 11,957		$ 11,621
Operating lease liabilities, long-term portion | $			64,160		67,025
Operating lease liabilities | $			76,117		$ 78,646
Noncash operating activities related to right-of-use assets | $			$ 300	$ 0
Weighted average remaining lease term			6 years 6 months
Weighted average discount rate (as a percent)			6.80%
Lease expense | $			$ 3,600	3,800
Operating lease payments | $			$ 4,100	$ 2,200
Austin TX, Long-term Lease
Lessee, Lease, Description [Line Items]
Lease space (area) | ft²			94,000
Number of office space locations | lease			2
Term of lease			132 months
First Expansion Premises
Lessee, Lease, Description [Line Items]
Lease space (area) | ft²			32,500
Second Expansion Premises
Lessee, Lease, Description [Line Items]
Lease space (area) | ft²			65,222
Corporate Headquarters Lease
Lessee, Lease, Description [Line Items]
Lease space (area) | ft²			136,000
Number of office space locations | item			2
"First Space" Sublease
Lessee, Lease, Description [Line Items]
Number of office space locations | ft²			88,000
"Second Space" Sublease
Lessee, Lease, Description [Line Items]
Number of office space locations | ft²			48,000
Corporate Headquarters Lease Amendment
Lessee, Lease, Description [Line Items]
Annual lease payment | $			$ 9,300
Term of lease			48 months
Tukwila, WA Lease
Lessee, Lease, Description [Line Items]
Lease space (area) | ft²			10,000
Term of lease			62 months
Renewal term of lease			5 years
South San Francisco, CA Lease
Lessee, Lease, Description [Line Items]
Lease space (area) | ft²			11,395
Annual lease payment | $			$ 900
Term of lease			36 months
Renewal term of lease			3 years
Pleasanton, CA Lease
Lessee, Lease, Description [Line Items]
Lease space (area) | ft²	16,319
Annual lease payment | $	$ 500
Term of lease	60 months
Laboratory space in Canada
Lessee, Lease, Description [Line Items]
Lease space (area) | ft²		7,107
Annual lease payment | $		$ 200
Term of lease		24 months
Certain workspaces and storage spaces | Minimum
Lessee, Lease, Description [Line Items]
Term of lease			1 year
Certain workspaces and storage spaces | Maximum
Lessee, Lease, Description [Line Items]
Term of lease			5 years