Fair value measurements - Schedule of Unrealized Loss on Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Fair value
Less than 12 months	$ 0	$ 0
12 months or greater	0	68,735
Total	0	68,735
Unrealized losses
Less than 12 months	0	0
12 months or greater	0	(1,759)
Total	0	(1,759)
U.S. government agency securities and treasuries
Fair value
Less than 12 months	0	0
12 months or greater	0	66,237
Total	0	66,237
Unrealized losses
Less than 12 months	0	0
12 months or greater	0	(1,733)
Total	$ 0	(1,733)
Corporate bonds
Fair value
Less than 12 months		0
12 months or greater		2,498
Total		2,498
Unrealized losses
Less than 12 months		0
12 months or greater		(26)
Total		$ (26)