Convertible loans - Schedule of Interest Expense (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
Facility Agreement With Deerfield Partners, L.P., Tranche One
Debt Instrument [Line Items]
Contractual interest expense	$ 2,444
Amortization of debt discount	3,220
Total	5,664
Facility Agreement With Deerfield Partners, L.P., Tranche Two
Debt Instrument [Line Items]
Contractual interest expense	1,880
Amortization of debt discount	140
Total	$ 2,020