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Composition of Certain Financial Statement Captions (Property And Equipment) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Property and Equipment [Line Items]
Property and Equipment, gross	$ 570,572		$ 567,691
Less: Accumulated depreciation	(386,319)		(378,639)
Property and Equipment, net	184,253		189,052
Depreciation expense	8,309	$ 7,473
Buildings
Property and Equipment [Line Items]
Property and Equipment, gross	206,799		206,151
Equipment
Property and Equipment [Line Items]
Property and Equipment, gross	143,155		141,820
Land
Property and Equipment [Line Items]
Property and Equipment, gross	24,226		24,179
Purchased software
Property and Equipment [Line Items]
Property and Equipment, gross	149,172		147,838
Furniture and fixtures
Property and Equipment [Line Items]
Property and Equipment, gross	21,488		21,439
Leasehold improvements
Property and Equipment [Line Items]
Property and Equipment, gross	21,838		21,604
Construction in progress
Property and Equipment [Line Items]
Property and Equipment, gross	$ 3,894		$ 4,660

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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- Definition

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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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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No definition available.

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