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 expense recognized in the current period that allocates the cost of nonproduction tangible assets over their useful lives.

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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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Composition of Certain Financial Statement Captions (Property And Equipment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	$ 588,117	$ 567,691
Less: Accumulated depreciation	(409,248)	(378,639)
Property and Equipment, net	178,869	189,052
Depreciation expense	33,481	30,959	$ 29,436
Buildings
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	209,766	206,151
Equipment
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	153,158	141,820
Land
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	24,651	24,179
Purchased software
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	156,387	147,838
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	21,254	21,439
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	21,946	21,604
Construction in progress
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	$ 955	$ 4,660