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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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Assets - Property, Plant, and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Property, plant, and equipment
Gross property, plant and equipment	$ 273,232		$ 273,232		$ 260,642
Less: accumulated depreciation and amortization	168,201		168,201		160,899
Net property, plant, and equipment	105,031		105,031		99,743
Depreciation expense	4,000	$ 3,500	7,700	$ 6,900
Land
Property, plant, and equipment
Gross property, plant and equipment	5,061		5,061		5,061
Building and improvements
Property, plant, and equipment
Gross property, plant and equipment	63,973		63,973		63,946
Machinery and equipment
Property, plant, and equipment
Gross property, plant and equipment	153,794		153,794		145,656
Leaseholds improvements
Property, plant, and equipment
Gross property, plant and equipment	$ 50,404		$ 50,404		$ 45,979