Leases - Narrative (Details) $ in Thousands	1 Months Ended		3 Months Ended		6 Months Ended
	Jun. 30, 2025 USD ($)	Jan. 31, 2023 ft² renewal_option	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)	Nov. 30, 2024 contract	Oct. 31, 2024 USD ($) ft²	Apr. 30, 2024 USD ($)	Aug. 31, 2021 USD ($) ft²
Lessee, Lease, Description [Line Items]
Restricted cash, non-current	$ 4,475		$ 4,475		$ 4,475		$ 4,325
Lease liability	22,727		22,727		22,727
Operating lease right-of-use assets	17,894		17,894		17,894		18,805
Number of contracts | contract								1
Cash paid for amounts included in measurement of operating lease liabilities			1,400	$ 1,300	2,800	$ 2,500
Mountain View, California
Lessee, Lease, Description [Line Items]
Rentable area (in square foot) | ft²											61,000
Restricted cash, non-current											$ 4,300
Santa Rosa, California
Lessee, Lease, Description [Line Items]
Rentable area (in square foot) | ft²									4,000
Lease term (in months)									29 months
Security deposit									$ 8
Lease liability									169
Operating lease right-of-use assets									$ 169
Austin, Texas
Lessee, Lease, Description [Line Items]
Rentable area (in square foot) | ft²		26,000
Security deposit	150		150		150		$ 150
Lease liability	561		561		561
Operating lease right-of-use assets	$ 561		$ 561		$ 561
Renewal option (in years)		5 years
Number of options | renewal_option		0
Extended renewal term (in months)	12 months
Tokyo, Japan
Lessee, Lease, Description [Line Items]
Lease liability										$ 420
Operating lease right-of-use assets										$ 420
Renewal option (in years)										3 years