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 aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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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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Property and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Property and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 16,868		$ 16,868		$ 16,970
Accumulated depreciation	(11,320)		(11,320)		(10,835)
Property and equipment, net	5,548		5,548		6,135
Depreciation expense	493	$ 637	1,053	$ 1,246
Computer equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	3,628		3,628		3,608
Technical equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	3,675		3,675		3,789
Facilities
Property, Plant and Equipment [Line Items]
Total property and equipment	3,691		3,691		3,693
Instruments
Property, Plant and Equipment [Line Items]
Total property and equipment	5,837		5,837		5,880
Capital projects in progress
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 37		$ 37		$ 0