Consolidated balance sheet components - Summary of Cash, Cash Equivalents, and Marketable Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Cash and Cash Equivalents [Line Items]
Amortized Cost	$ 371,105	$ 354,339
Unrealized Gains	119	97
Unrealized Losses	(3)	0
Fair Value	371,221	354,436
Fair Value	26,330	4,898
U.S. government securities
Cash and Cash Equivalents [Line Items]
Unrealized Losses	(3)	0
Fair Value	26,330	4,898
Cash and cash equivalents:
Cash and Cash Equivalents [Line Items]
Amortized Cost	235,929	190,592
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	235,929	190,592
Cash and cash equivalents: | Cash
Cash and Cash Equivalents [Line Items]
Amortized Cost	78,150	42,326
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	78,150	42,326
Cash and cash equivalents: | Money market funds
Cash and Cash Equivalents [Line Items]
Amortized Cost	153,725	136,771
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	153,725	136,771
Cash and cash equivalents: | Time deposits
Cash and Cash Equivalents [Line Items]
Amortized Cost	4,054	9,809
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	4,054	9,809
Cash and cash equivalents: | U.S. government securities
Cash and Cash Equivalents [Line Items]
Amortized Cost		1,686
Unrealized Gains		0
Unrealized Losses		0
Fair Value		1,686
Marketable securities: | U.S. government securities
Cash and Cash Equivalents [Line Items]
Amortized Cost	135,176	163,747
Unrealized Gains	119	97
Unrealized Losses	(3)	0
Fair Value	$ 135,292	$ 163,844