Cash, cash equivalents and marketable securities - Portfolio of Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Cash and cash equivalents
Cost or Amortized cost	$ 62,576	$ 128,965
Unrealized losses	(9)
Fair value	62,568	128,965
Cash accounts in banking institutions
Cash and cash equivalents
Cost or Amortized cost	25,453	44,549
Fair value	25,453	44,549
Certificates of deposit
Cash and cash equivalents
Cost or Amortized cost	7,032
Unrealized losses	(2)
Fair value	7,030
Money market funds
Cash and cash equivalents
Cost or Amortized cost	15,721	84,416
Fair value	15,721	$ 84,416
Commercial paper
Cash and cash equivalents
Cost or Amortized cost	13,817
Unrealized losses	(6)
Fair value	13,811
Corporate debt securities
Cash and cash equivalents
Cost or Amortized cost	554
Unrealized losses	(1)
Fair value	$ 553