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Goodwill And Related Intangible Assets (Schedule Of Acquired Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified |  |  |  |  |  |  |  |  |  |  |  |  | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2013 Trademarks [Member] | Dec. 31, 2012 Trademarks [Member] | Dec. 31, 2013 Unpatented Technology And Patents [Member] | Dec. 31, 2012 Unpatented Technology And Patents [Member] | Dec. 31, 2013 Customer Relationships [Member] | Dec. 31, 2012 Customer Relationships [Member] | Dec. 31, 2013 Non-Compete Agreements [Member] | Dec. 31, 2012 Non-Compete Agreements [Member] | Dec. 31, 2013 Backlog [Member] | Dec. 31, 2012 Backlog [Member] | Dec. 31, 2013 Maximum [Member] Trademarks [Member] | Dec. 31, 2013 Maximum [Member] Unpatented Technology And Patents [Member] | Dec. 31, 2013 Maximum [Member] Customer Relationships [Member] | Dec. 31, 2013 Maximum [Member] Non-Compete Agreements [Member] | Dec. 31, 2013 Maximum [Member] Backlog [Member] | Dec. 31, 2013 Minimum [Member] Trademarks [Member] | Dec. 31, 2013 Minimum [Member] Unpatented Technology And Patents [Member] | Dec. 31, 2013 Minimum [Member] Customer Relationships [Member] | Dec. 31, 2013 Minimum [Member] Non-Compete Agreements [Member] | Dec. 31, 2013 Minimum [Member] Backlog [Member]
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross Carrying Amount, Indefinite-lived intangible assets |  |  | $ 45,724 | $ 48,774 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross Carrying Amount, Finite-lived intangible assets | 86,117 | 84,778 | 3,989 | 2,771 | 24,690 | 24,427 | 54,171 | 53,043 | 1,937 | 3,207 | 1,330 | 1,330 |  |  |  |  |  |  |  |  |  |
Total acquired intangible assets, Gross Carrying Amount | 131,841 | 133,552 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated Amortization, Indefinite-lived intangible assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated Amortization, Finite-lived intangible assets | 40,064 | 34,793 | 1,420 | 1,085 | 6,980 | 5,204 | 28,926 | 24,687 | 1,408 | 2,598 | 1,330 | 1,219 |  |  |  |  |  |  |  |  |  |
Total acquired intangible assets, Accumulated Amortization | $ 40,064 | $ 34,793 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated Useful Life |  |  |  |  |  |  |  |  |  |  |  |  | 15 years | 20 years | 16 years | 10 years | 2 years | 2 years | 5 years | 5 years | 4 years | 1 year

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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=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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