Balance Sheet Components - Intangible assets (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Intangible assets
Finite-lived intangible assets, net	$ 13,211
Total intangible assets, net	18,011	$ 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	(12,778)	(12,361)
Finite-lived intangible assets, net	12,222	12,639
Trademarks
Intangible assets
Total intangible assets	300	300
Accumulated amortization	(153)	(148)
Finite-lived intangible assets, net	147	152
Internal use software costs - registry
Intangible assets
Total intangible assets	1,237	1,237
Accumulated impairment	(371)	(371)
Accumulated amortization	(547)	(512)
Finite-lived intangible assets, net	319	354
Patents
Intangible assets
Total intangible assets	361	361
Accumulated amortization	(41)	(36)
Finite-lived intangible assets, net	320	325
License
Intangible assets
Total intangible assets	214	215
Accumulated amortization	(11)	(6)
Finite-lived intangible assets, net	$ 203	$ 209