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Property and equipment, net (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	$ 20,024	$ 17,388
Less: Accumulated depreciation	(11,391)	(10,336)
Property plant and equipment, net	8,633	7,052
Manufacturing and laboratory equipment
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	13,198	12,961
Computer hardware and software
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	1,637	1,088
Office furniture and fixtures
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	723	343
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	3,012	$ 2,996
Construction-in-process
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	$ 1,454

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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