Consolidated balance sheet components - Summary of Cash, Cash Equivalents, and Marketable Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Cash and Cash Equivalents [Line Items]
Amortized Cost	$ 479,433	$ 465,584
Unrealized Gains	11	34
Unrealized Losses	(4)	(246)
Fair Value	479,440	465,372
Unrealized loss position, fair value	43,420	84,017
Cash and Cash Equivalents
Cash and Cash Equivalents [Line Items]
Amortized Cost	327,972	313,684
Unrealized Gains	2	4
Unrealized Losses	0	(3)
Fair Value	327,974	313,685
Unrealized loss position, fair value	0	24,960
Cash and Cash Equivalents | Cash
Cash and Cash Equivalents [Line Items]
Amortized Cost	46,057	134,408
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	46,057	134,408
Cash and Cash Equivalents | Money market funds
Cash and Cash Equivalents [Line Items]
Amortized Cost	267,036	130,377
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	267,036	130,377
Cash and Cash Equivalents | U.S. government securities
Cash and Cash Equivalents [Line Items]
Amortized Cost	14,879	48,899
Unrealized Gains	2	4
Unrealized Losses	0	(3)
Fair Value	14,881	48,900
Marketable Securities | U.S. government securities
Cash and Cash Equivalents [Line Items]
Amortized Cost	151,461	151,900
Unrealized Gains	9	30
Unrealized Losses	(4)	(243)
Fair Value	151,466	151,687
Unrealized loss position, fair value	$ 43,420	$ 59,057