Balance Sheet Components - Intangible assets (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Intangible assets
Finite-lived intangible assets, net	$ 12,485
Total intangible assets, net	17,285	$ 18,479
In process research and development
Intangible assets
Total intangible assets	4,800	4,800
Developed technology
Intangible assets
Total intangible assets	25,000	25,000
Accumulated amortization	(13,611)	(12,361)
Finite-lived intangible assets, net	11,389	12,639
Trademarks
Intangible assets
Total intangible assets	300	300
Accumulated amortization	(163)	(148)
Finite-lived intangible assets, net	137	152
Internal use software costs - registry
Intangible assets
Total intangible assets	1,237	1,237
Accumulated impairment	(371)	(371)
Accumulated amortization	(618)	(512)
Finite-lived intangible assets, net	248	354
Patents
Intangible assets
Total intangible assets	569	361
Accumulated amortization	(50)	(36)
Finite-lived intangible assets, net	519	325
License
Intangible assets
Total intangible assets	215	215
Accumulated amortization	(23)	(6)
Finite-lived intangible assets, net	$ 192	$ 209