Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Property and equipment
Gross property and equipment	$ 9,178	$ 8,298
Accumulated Depreciation	(6,536)	(5,865)
Net Property and Equipment	2,642	2,433
Depreciation expense	834	788
Leasehold Improvements
Property and equipment
Gross property and equipment	1,196	1,162
Machinery and Equipment
Property and equipment
Gross property and equipment	5,475	4,673
Information Technology & Office Equipment
Property and equipment
Gross property and equipment	1,831	1,810
Laboratory Equipment
Property and equipment
Gross property and equipment	$ 676	$ 653

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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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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