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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Composition of Certain Financial Statement Captions (Property And Equipment) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Property and Equipment [Line Items]
Property and equipment, gross	$ 597,499		$ 588,117
Less: Accumulated depreciation	(417,041)		(409,248)
Property and Equipment, net	180,458		178,869
Depreciation expense	8,098	$ 8,309
Buildings
Property and Equipment [Line Items]
Property and equipment, gross	209,834		209,766
Equipment
Property and Equipment [Line Items]
Property and equipment, gross	161,426		153,158
Land
Property and Equipment [Line Items]
Property and equipment, gross	25,825		24,651
Purchased software
Property and Equipment [Line Items]
Property and equipment, gross	156,529		156,387
Furniture and fixtures
Property and Equipment [Line Items]
Property and equipment, gross	21,328		21,254
Leasehold improvements
Property and Equipment [Line Items]
Property and equipment, gross	21,564		21,946
Construction in progress
Property and Equipment [Line Items]
Property and equipment, gross	$ 993		$ 955