Property and equipment, net (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization [Abstract]
Property, plant and equipment, gross	$ 5,981	$ 4,132
Less accumulated depreciation and amortization	(3,908)	(3,451)
Property and equipment, net	2,073	681
Lab equipment
Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization [Abstract]
Property, plant and equipment, gross	5,386	3,681
Leasehold improvements
Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization [Abstract]
Property, plant and equipment	233	194
Computer equipment
Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization [Abstract]
Property, plant and equipment	326	235
Office equipment and furniture and fixtures
Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization [Abstract]
Property, plant and equipment	$ 36	$ 22