Consolidated balance sheet components - Narrative (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($) security	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) security	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) security	Aug. 24, 2021 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Realized gains and losses reclassified from accumulated other comprehensive loss to other income (expense), net	$ 0	$ 0	$ 0	$ 0
Number of continuous unrealized loss position for twelve months or longer | security	0		0		0
Depreciation	$ 700	1,100	$ 2,300	3,400
Amortization of capitalized software	4,500	3,300	12,700	9,000
Amortization of intangible assets	1,000	$ 1,100	3,100	$ 3,200
Goodwill	$ 12,646		$ 12,646		$ 12,646
CorpU
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill						$ 12,600