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Goodwill and Related Intangible Assets (Schedule Of Acquired Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 Months Ended
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Jun. 30, 2014 | Dec. 31, 2013 | Jun. 30, 2014 Trademarks | Dec. 31, 2013 Trademarks | Jun. 30, 2014 Unpatented technology | Dec. 31, 2013 Unpatented technology | Jun. 30, 2014 Customer relationships | Dec. 31, 2013 Customer relationships | Jun. 30, 2014 Non-compete agreements | Dec. 31, 2013 Non-compete agreements | Jun. 30, 2014 Backlog | Dec. 31, 2013 Backlog | Jun. 30, 2014 Trademarks | Dec. 31, 2013 Trademarks | Jun. 30, 2014 Minimum Trademarks | Jun. 30, 2014 Minimum Unpatented technology | Jun. 30, 2014 Minimum Customer relationships | Jun. 30, 2014 Minimum Non-compete agreements | Jun. 30, 2014 Minimum Backlog | Jun. 30, 2014 Maximum Trademarks | Jun. 30, 2014 Maximum Unpatented technology | Jun. 30, 2014 Maximum Customer relationships | Jun. 30, 2014 Maximum Non-compete agreements | Jun. 30, 2014 Maximum Backlog
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross Carrying Amount, Indefinite-lived intangible assets |  |  |  |  |  |  |  |  |  |  |  |  | $ 45,791 | $ 45,724 |  |  |  |  |  |  |  |  |  |
Gross Carrying Amount, Finite-lived intangible assets | 86,232 | 86,117 | 3,996 | 3,989 | 24,690 | 24,690 | 54,279 | 54,171 | 1,937 | 1,937 | 1,330 | 1,330 |  |  |  |  |  |  |  |  |  |  |  |
Total acquired intangible assets, Gross Carrying Amount | 132,023 | 131,841 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated Amortization, Indefinite-lived intangible assets |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 |  |  |  |  |  |  |  |  |  |
Accumulated Amortization, Finite-lived intangible assets | 43,049 | 40,064 | 1,636 | 1,420 | 7,874 | 6,980 | 30,716 | 28,926 | 1,493 | 1,408 | 1,330 | 1,330 |  |  |  |  |  |  |  |  |  |  |  |
Total acquired intangible assets, Accumulated Amortization | $ 43,049 | $ 40,064 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated Life |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 years | 5 years | 5 years | 4 years | 1 year | 15 years | 20 years | 16 years | 10 years | 2 years

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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