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	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Property and Equipment [Line Items]
Property and equipment, gross	$ 632,835		$ 621,890
Less: Accumulated depreciation	(449,628)		(440,861)
Property and Equipment, net	183,207		181,029
Depreciation expense	8,531	$ 8,098
Buildings
Property and Equipment [Line Items]
Property and equipment, gross	210,772		210,626
Equipment
Property and Equipment [Line Items]
Property and equipment, gross	185,813		179,318
Land
Property and Equipment [Line Items]
Property and equipment, gross	26,439		26,439
Purchased software
Property and Equipment [Line Items]
Property and equipment, gross	162,352		160,714
Furniture and fixtures
Property and Equipment [Line Items]
Property and equipment, gross	22,092		21,956
Leasehold improvements
Property and Equipment [Line Items]
Property and equipment, gross	21,500		20,879
Construction in progress
Property and Equipment [Line Items]
Property and equipment, gross	$ 3,867		$ 1,958