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Property, Plant and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross	$ 113,961	$ 110,742
Accumulated depreciation	(67,834)	(66,262)
Property and equipment, net	$ 46,127	44,480
Automobile
Property, Plant and Equipment [Line Items]
Useful life (years)	3 years
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross	$ 64	34
Computer hardware and software
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross	$ 5,046	4,840
Computer hardware and software | Minimum
Property, Plant and Equipment [Line Items]
Useful life (years)	3 years
Computer hardware and software | Maximum
Property, Plant and Equipment [Line Items]
Useful life (years)	5 years
Manufacturing and lab equipment
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross	$ 71,663	69,849
Manufacturing and lab equipment | Minimum
Property, Plant and Equipment [Line Items]
Useful life (years)	2 years
Manufacturing and lab equipment | Maximum
Property, Plant and Equipment [Line Items]
Useful life (years)	7 years
Office equipment and furniture
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross	$ 1,769	1,605
Office equipment and furniture | Minimum
Property, Plant and Equipment [Line Items]
Useful life (years)	5 years
Office equipment and furniture | Maximum
Property, Plant and Equipment [Line Items]
Useful life (years)	7 years
Leasehold and building improvements
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross	$ 22,628	21,934
Leasehold and building improvements | Minimum
Property, Plant and Equipment [Line Items]
Useful life (years)	2 years
Leasehold and building improvements | Maximum
Property, Plant and Equipment [Line Items]
Useful life (years)	12 years
Buildings
Property, Plant and Equipment [Line Items]
Useful life (years)	30 years
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross	$ 9,392	9,081
Land
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross	$ 3,399	$ 3,399

X

- Definition

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

+ References

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-Publisher FASB
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-SubTopic 10
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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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+ References

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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