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Intangible Assets (Tables) | 3 Months Ended
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Mar. 31, 2013
Schedule of Amortizable Intangible Assets | Amortizable intangible assets consist of the following and are included in intangible assets on the balance sheet:
|  | March 31, 2013 |
|  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |  |  | Weighted Average Useful Life |
|  | (in thousands) |
Developed technology |  | $ | 357,555 |  |  | $ | 155,720 |  |  | $ | 201,835 |  |  |  | 6.3 years |
Customer relationships and service and software maintenance contracts |  |  | 144,971 |  |  |  | 68,022 |  |  |  | 76,949 |  |  |  | 8.0 years |
Trade names and trademarks |  |  | 33,840 |  |  |  | 11,793 |  |  |  | 22,047 |  |  |  | 9.0 years |
Customer backlog |  |  | 1,000 |  |  |  | 1,000 |  |  |  | — |  |  |  | 0.4 years |
Total intangible assets |  | $ | 537,366 |  |  | $ | 236,535 |  |  | $ | 300,831 |  |  |  | 7.0 years |
|  | December 31, 2012 |
|  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |  |  | Weighted Average Useful Life |
|  | (in thousands) |
Developed technology |  | $ | 357,555 |  |  | $ | 143,126 |  |  | $ | 214,429 |  |  |  | 6.3 years |
Customer relationships and service and software maintenance contracts |  |  | 144,971 |  |  |  | 63,464 |  |  |  | 81,507 |  |  |  | 8.0 years |
Trade names and trademarks |  |  | 33,840 |  |  |  | 10,909 |  |  |  | 22,931 |  |  |  | 9.0 years |
Customer backlog |  |  | 1,000 |  |  |  | 1,000 |  |  |  | — |  |  |  | 0.4 years |
Total intangible assets |  | $ | 537,366 |  |  | $ | 218,499 |  |  | $ | 318,867 |  |  |  | 7.0 years |
Schedule of Estimated Intangible Asset Amortization Expense | Estimated intangible asset amortization expense for each of the five succeeding fiscal years is as follows:
Year |  | Amortization Expense |
|  | (in thousands) |
2013 (remainder) |  | $ | 54,096 |
2014 |  |  | 69,102 |
2015 |  |  | 52,351 |
2016 |  |  | 52,351 |
2017 |  |  | 46,193 |

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- Definition Tabular disclosure of the estimated aggregate amortization expense for intangible assets subject to amortization for each of the five succeeding fiscal years. + 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) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 + Details
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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + 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) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16265-109275 + Details
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