Balance Sheet Components - Intangible assets (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Intangible assets
Finite-lived intangible assets, net	$ 14,827
Total intangible assets, net	19,627	$ 20,116
Developed technology
Intangible assets
Total intangible assets	25,000	25,000
Accumulated amortization	(11,111)	(10,694)
Finite-lived intangible assets, net	13,889	14,306
In process research and development
Intangible assets
Total intangible assets	4,800	4,800
Finite-lived intangible assets, net	4,800	4,800
Trademarks
Intangible assets
Total intangible assets	300	300
Accumulated amortization	(133)	(128)
Finite-lived intangible assets, net	167	172
Internal use software costs - registry
Intangible assets
Total intangible assets	1,236	1,236
Accumulated impairment	(371)	(371)
Accumulated amortization	(432)	(370)
Finite-lived intangible assets, net	433	495
Patents
Intangible assets
Total intangible assets	361	361
Accumulated amortization	(23)	(18)
Finite-lived intangible assets, net	$ 338	$ 343