Marketable securities - Summary of marketable securities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Marketable securities, current:
Fair Value	$ 195,992	$ 127,091
Marketable securities, non-current:
Fair Value	28,759	28,008
Amortized Cost	224,296	155,226
Gross Unrealized Gains	500	151
Gross Unrealized Losses	(45)	(278)
Fair Value	224,751	155,099
Corporate debt securities
Marketable securities, current:
Amortized Cost	161,256	100,903
Gross Unrealized Gains	342	16
Gross Unrealized Losses	(33)	(221)
Fair Value	161,565	100,698
Marketable securities, non-current:
Amortized Cost	27,297	27,901
Gross Unrealized Gains	120	120
Gross Unrealized Losses	(10)	(14)
Fair Value	27,407	28,007
U.S. Treasury securities
Marketable securities, current:
Amortized Cost	23,233	5,965
Gross Unrealized Gains	28	1
Gross Unrealized Losses	0	0
Fair Value	23,261	5,966
U.S. government debt securities
Marketable securities, current:
Amortized Cost	11,160	20,457
Gross Unrealized Gains	9	14
Gross Unrealized Losses	(2)	(43)
Fair Value	11,167	$ 20,428
Marketable securities, non-current:
Amortized Cost	1,350
Gross Unrealized Gains	1
Gross Unrealized Losses	0
Fair Value	$ 1,351