Marketable securities - Summary of marketable securities (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Marketable securities, current:
Fair Value	$ 222,404	$ 246,399
Marketable securities, non-current:
Fair Value	19,415	60,962
Amortized Cost	243,593	311,498
Gross Unrealized Gains	20	4
Gross Unrealized Losses	(1,794)	(4,141)
Fair Value	241,819	307,361
Corporate debt securities
Marketable securities, current:
Amortized Cost	164,192	183,270
Gross Unrealized Gains	20	2
Gross Unrealized Losses	(963)	(2,068)
Fair Value	163,249	181,204
Marketable securities, non-current:
Amortized Cost	12,722	53,592
Gross Unrealized Gains	0	2
Gross Unrealized Losses	(116)	(471)
Fair Value	12,606	53,123
U.S. government debt securities
Marketable securities, current:
Amortized Cost	48,856	40,986
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(582)	(1,184)
Fair Value	48,274	39,802
Marketable securities, non-current:
Amortized Cost	6,909	8,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(100)	(161)
Fair Value	6,809	7,839
U.S. Treasury securities
Marketable securities, current:
Amortized Cost	10,914	25,650
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(33)	(257)
Fair Value	$ 10,881	$ 25,393