Marketable securities - Summary of marketable securities (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Marketable securities, current:
Fair Value	$ 133,075	$ 189,405
Marketable securities, non-current:
Fair Value	7,875	22,359
Amortized Cost	140,863	211,711
Gross Unrealized Gains	96	217
Gross Unrealized Losses	(9)	(164)
Fair Value	140,950	211,764
Corporate debt securities
Marketable securities, current:
Amortized Cost	99,945	164,469
Gross Unrealized Gains	65	189
Gross Unrealized Losses	(9)	(85)
Fair Value	100,001	164,573
Marketable securities, non-current:
Amortized Cost	7,866	22,424
Gross Unrealized Gains	9	12
Gross Unrealized Losses	0	(78)
Fair Value	7,875	22,358
U.S. Treasury securities
Marketable securities, current:
Amortized Cost	27,851	18,291
Gross Unrealized Gains	21	12
Gross Unrealized Losses	0	(1)
Fair Value	27,872	18,302
U.S. government debt securities
Marketable securities, current:
Amortized Cost	5,201	6,527
Gross Unrealized Gains	1	4
Gross Unrealized Losses	0	0
Fair Value	$ 5,202	$ 6,531