Cash, cash equivalents and marketable securities - Portfolio of Marketable Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized cost	$ 152,649	$ 187,221
Unrealized gains	3	18
Unrealized losses	(1,462)	(431)
Fair value	151,190	186,808
Certificates of deposit
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized cost	22,012	5,296
Unrealized gains	2
Unrealized losses	(96)
Fair value	21,918	5,296
Commercial paper
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized cost	49,451	26,503
Unrealized gains	1	4
Unrealized losses	(118)	(4)
Fair value	49,334	26,503
Corporate debt securities
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized cost	79,188	145,577
Unrealized gains		10
Unrealized losses	(1,198)	(418)
Fair value	77,990	145,169
U.S. government securities
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized cost	1,998	1,996
Unrealized losses	(50)	(8)
Fair value	$ 1,948	1,988
Non-U.S. government securities
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized cost		7,849
Unrealized gains		4
Unrealized losses		(1)
Fair value		$ 7,852

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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