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Property, Plant and Equipment (Details) - USD ($) $ in Thousands			12 Months Ended
	Nov. 01, 2019	Nov. 30, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross			$ 611,988	$ 579,592
Less accumulated depreciation and amortization			377,460	346,594
Property Plant and Equipment Excluding Capital Projects in Progress			234,528	232,998
Capital projects in progress			20,656	16,014
Property, plant and equipment, net			255,184	249,012
Fully Depreciated Property, Plant and Equipment, Original Cost			200,500	211,200
Proceeds from Sale of Property Held-for-sale		$ 17,500
Proceeds from Sale of Real Estate	$ 9,500
Gains (Losses) on Sales of Other Real Estate	$ 5,600
Depreciation			32,100	32,600	$ 33,300
Software Development [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross			29,400	28,600
Capital projects in progress			5,500	3,200
Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross			28,553	28,092
Buildings and site improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross			203,421	195,210
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross			7,091	4,911
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross			$ 372,923	$ 351,379

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- Definition

Represents the original cost of fully depreciated property, plant and equipment that are still in use.

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Represents the aggregate of long-lived physical assets excluding capital projects in progress used in the normal conduct of business and not intended for resale.

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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 of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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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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The net gain (loss) resulting from sales and other disposals of other real estate owned, increases (decreases) in the valuation allowance for foreclosed real estate, and write-downs of other real estate owned after acquisition or physical possession.

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The cash inflow from the sale of formerly productive land held for sale, anything permanently fixed to it, including buildings, structures on it, and so forth.

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Cash received for the sale of real estate that is not part of an investing activity during the current period.

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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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