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Intangible Assets (Intangible Assets Other Than Goodwill) (Details) (USD $) In Thousands, unless otherwise specified | 6 Months Ended |
--- | --- | ---
Jun. 30, 2014 | Dec. 31, 2013
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Intangible assets with finite lives: Accumulated Amortization | $ (87,119) | $ (69,554)
Intangible assets, Gross | 264,902 | 211,263
Intangible assets, Net | 177,783 | 141,709
Weighted average useful life | 4 years |
Trademarks [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Indefinite-lived intangible assets | 5,910 | 2,110
Licenses [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Intangible assets with finite lives: Gross | 5,875 | 5,875
Intangible assets with finite lives: Accumulated Amortization | (5,875) | (5,875)
Patent Costs [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Intangible assets with finite lives: Gross | 22,211 | 21,545
Intangible assets with finite lives: Accumulated Amortization | (7,195) | (5,960)
Intangible assets with finite lives: Net | 15,016 | 15,585
Weighted average useful life | 3 years |
Acquired Technology [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Intangible assets with finite lives: Gross | 44,591 | 30,095
Intangible assets with finite lives: Accumulated Amortization | (15,410) | (13,615)
Intangible assets with finite lives: Net | 29,181 | 16,480
Weighted average useful life | 5 years |
Internally Developed Software [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Intangible assets with finite lives: Gross | 17,862 | 18,097
Intangible assets with finite lives: Accumulated Amortization | (13,583) | (12,863)
Intangible assets with finite lives: Net | 4,279 | 5,234
Intangible assets, useful life | 5 years |
Customer Relationships [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Intangible assets with finite lives: Gross | 113,067 | 95,793
Intangible assets with finite lives: Accumulated Amortization | (28,021) | (18,283)
Intangible assets with finite lives: Net | 85,046 | 77,510
Weighted average useful life | 5 years |
Non-Compete Agreements [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Intangible assets with finite lives: Gross | 21,010 | 16,848
Intangible assets with finite lives: Accumulated Amortization | (8,758) | (6,666)
Intangible assets with finite lives: Net | 12,252 | 10,182
Weighted average useful life | 3 years |
Trade Names [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Intangible assets with finite lives: Gross | 10,708 | 9,302
Intangible assets with finite lives: Accumulated Amortization | (3,459) | (2,211)
Intangible assets with finite lives: Net | 7,249 | 7,091
Weighted average useful life | 3 years |
Other [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Intangible assets with finite lives: Gross | 23,668 | 11,598
Intangible assets with finite lives: Accumulated Amortization | (4,818) | (4,081)
Intangible assets with finite lives: Net | $ 18,850 | $ 7,517
Weighted average useful life | 2 years |
Minimum [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Intangible assets, useful life | 1 year |
Minimum [Member] | Patent Costs [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Intangible assets, useful life | 6 years |
Minimum [Member] | Acquired Technology [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Intangible assets, useful life | 5 years |
Minimum [Member] | Customer Relationships [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Intangible assets, useful life | 5 years |
Minimum [Member] | Non-Compete Agreements [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Intangible assets, useful life | 3 years |
Minimum [Member] | Trade Names [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Intangible assets, useful life | 2 years |
Minimum [Member] | Other [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Intangible assets, useful life | 1 year |
Maximum [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Intangible assets, useful life | 13 years |
Maximum [Member] | Patent Costs [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Intangible assets, useful life | 7 years |
Maximum [Member] | Acquired Technology [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Intangible assets, useful life | 10 years |
Maximum [Member] | Internally Developed Software [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Weighted average useful life | 1 year |
Maximum [Member] | Customer Relationships [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Intangible assets, useful life | 13 years |
Maximum [Member] | Non-Compete Agreements [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Intangible assets, useful life | 11 years |
Maximum [Member] | Trade Names [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Intangible assets, useful life | 10 years |
Maximum [Member] | Other [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Intangible assets, useful life | 7 years |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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