Consolidated balance sheet components - Narrative (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024 USD ($) security	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) security	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($) security	Aug. 24, 2021 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Number of continuous unrealized loss position for twelve months or longer | security	0		0		0
Depreciation	$ 700	$ 700	$ 2,200	$ 2,300
Amortization of capitalized software	5,000	4,500	14,800	12,700
Amortization of intangible assets	700	$ 1,000	2,600	$ 3,100
Goodwill	$ 12,646		$ 12,646		$ 12,646
CorpU
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill						$ 12,600