Consolidated balance sheet components - Schedule of Cash, Cash Equivalents, and Marketable Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Cash and Cash Equivalents [Line Items]
Amortized Cost	$ 430,716	$ 476,860
Unrealized Gains	2	76
Unrealized Losses	(28)	0
Fair Value	430,690	476,936
Unrealized loss position, fair value	121,365	0
Cash and cash equivalents:
Cash and Cash Equivalents [Line Items]
Amortized Cost	256,807	305,564
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	256,807	305,564
Cash and cash equivalents: | Cash
Cash and Cash Equivalents [Line Items]
Amortized Cost	38,828	38,872
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	38,828	38,872
Cash and cash equivalents: | Money market funds
Cash and Cash Equivalents [Line Items]
Amortized Cost	217,979	266,692
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	217,979	266,692
Marketable securities: | U.S. government securities
Cash and Cash Equivalents [Line Items]
Amortized Cost	173,909	171,296
Unrealized Gains	2	76
Unrealized Losses	(28)	0
Fair Value	173,883	171,372
Unrealized loss position, fair value	$ 121,365	$ 0