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Goodwill And Other Intangible Assets (Schedule Of Other Intangible Assets) (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
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Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | $ 187,359 | $ 185,392
Accumulated amortization | (127,077) | (121,161)
Net carrying amount | 60,282 | 64,231
Customer Relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | 99,981 | 100,136
Accumulated amortization | (64,282) | (59,680)
Net carrying amount | 35,699 | 40,456
Purchased Software Costs [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | 51,910 | 49,788
Accumulated amortization | (35,621) | (34,325)
Net carrying amount | 16,289 | 15,463
Technology Licenses [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | 26,800 | 26,800
Accumulated amortization | (26,800) | (26,800)
Net carrying amount | 0 | 0
Trade Names and Trademarks [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | 7,800 | 7,800
Accumulated amortization | 0 | 0
Net carrying amount | 7,800 | 7,800
Other Intangible Assets [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | 868 | 868
Accumulated amortization | (374) | (356)
Net carrying amount | $ 494 | $ 512

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