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Goodwill and Other Intangible Assets (Schedule Of Other Intangible Assets) (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
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Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | $ 168,043 | $ 176,723
Accumulated amortization | (115,889) | (118,537)
Net carrying amount | 52,154 | 58,186
Customer Relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | 100,059 | 100,072
Accumulated amortization | (70,703) | (65,958)
Net carrying amount | 29,356 | 34,114
Capitalized Purchased Software Costs [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | 43,816 | 52,483
Accumulated amortization | (29,288) | (36,702)
Net carrying amount | 14,528 | 15,781
Technology Licenses [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | 15,500 | 15,500
Accumulated amortization | (15,500) | (15,500)
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 | (398) | (377)
Net carrying amount | $ 470 | $ 491

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