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Consolidated balance sheet components - Schedule of Cash, Cash Equivalents, and Marketable Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Cash and Cash Equivalents [Line Items]
Amortized Cost	$ 356,944	$ 476,860
Unrealized Gains	165	76
Unrealized Losses	0	0
Fair Value	357,109	476,936
Cash and cash equivalents:
Cash and Cash Equivalents [Line Items]
Amortized Cost	204,563	305,564
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	204,563	305,564
Cash and cash equivalents: | Cash
Cash and Cash Equivalents [Line Items]
Amortized Cost	37,299	38,872
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	37,299	38,872
Cash and cash equivalents: | Money market funds
Cash and Cash Equivalents [Line Items]
Amortized Cost	160,819	266,692
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	160,819	266,692
Cash and cash equivalents: | Time deposits
Cash and Cash Equivalents [Line Items]
Amortized Cost	6,445
Unrealized Gains	0
Unrealized Losses	0
Fair Value	6,445
Marketable securities: | U.S. government securities
Cash and Cash Equivalents [Line Items]
Amortized Cost	152,381	171,296
Unrealized Gains	165	76
Unrealized Losses	0	0
Fair Value	$ 152,546	$ 171,372

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