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Income Taxes (Interest And Penalties) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Gross liability for unrecognized tax benefits, exclusive of interest and penalties	$ 16,850	$ 15,911
Interest and penalties on unrecognized benefits	2,250	2,105
Total gross uncertain tax positions	19,100	18,016
Amount included in Current liabilities	6,053	6,546
Amount included in Other long-term liabilities	$ 13,047	$ 11,470

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Gross Liability For Unrecognized Tax Benefits Exclusive Of Interest And Penalties

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Amount recognized for uncertainty in income taxes classified as current.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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Amount recognized for uncertainty in income taxes classified as noncurrent.

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Amount of unrecognized tax benefits.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
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-URI http://asc.fasb.org/extlink&oid=123427490&loc=SL37586934-109318

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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-Name Accounting Standards Codification
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