Marketable securities - Summary of marketable securities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Marketable securities, current:
Fair Value	$ 246,399	$ 233,155
Marketable securities, non-current
Fair Value	60,962	142,200
Amortized Cost	311,498	376,130
Gross Unrealized Gains	4	1
Gross Unrealized Losses	(4,141)	(776)
Fair Value	307,361	375,355
Corporate debt securities
Marketable securities, current:
Amortized Cost	183,270	219,414
Gross Unrealized Gains	2	1
Gross Unrealized Losses	(2,068)	(250)
Fair Value	181,204	219,165
Marketable securities, non-current
Amortized Cost	53,592	89,538
Gross Unrealized Gains	2	0
Gross Unrealized Losses	(471)	(403)
Fair Value	53,123	89,135
Fair Value	234,327	308,300
U.S. government debt securities
Marketable securities, current:
Amortized Cost	40,986	8,987
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(1,184)	(3)
Fair Value	39,802	8,984
Marketable securities, non-current
Amortized Cost	8,000	32,982
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(161)	(105)
Fair Value	7,839	32,877
Fair Value	47,641	37,883
U.S. Treasury securities
Marketable securities, current:
Amortized Cost	25,650	5,006
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(257)	0
Fair Value	25,393	5,006
Marketable securities, non-current
Amortized Cost		20,203
Gross Unrealized Gains		0
Gross Unrealized Losses		(15)
Fair Value		20,188
Fair Value	$ 25,393	$ 29,172