Property and equipment, net - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Cost	$ 4,155	$ 2,748
Accumulated Amortization	585	688
Net Book Value	3,570	2,060
Leasehold improvements
Property, Plant and Equipment [Line Items]
Cost		490
Accumulated Amortization		333
Net Book Value		157
Laboratory equipment
Property, Plant and Equipment [Line Items]
Cost	3,402	1,515
Accumulated Amortization	426	62
Net Book Value	2,976	1,453
Furniture, fixtures, and IT equipment
Property, Plant and Equipment [Line Items]
Cost	753	743
Accumulated Amortization	159	293
Net Book Value	$ 594	$ 450