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Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2014
Goodwill and Intangible Assets |
Schedule of changes in goodwill |
|  | Gross |  |  |  |  |
|  | Carrying |  | Accumulated |  | Net |
|  | Amount |  | Impairment |  | Amount |
|  | (in thousands) |
As of December 31, 2012 |  | $ | 151,069 |  | $ | 95,241 |  | $ | 55,828 |
Acquisition |  | 35,520 |  | — |  | 35,520 |
As of December 31, 2013 |  | 186,589 |  | 95,241 |  | 91,348 |
Acquisition |  | 51,396 |  | — |  | 51,396 |
Purchase price adjustments |  | 173 |  | — |  | 173 |
Impairments |  | — |  | 27,958 |  | (27,958 | )
As of December 31, 2014 |  | $ | 238,158 |  | $ | 123,199 |  | $ | 114,959 |
Schedule of intangible assets |
|  |  |  | December 31, 2014 |  | December 31, 2013 |
|  | Weighted |  |  |  | Accumulated |  |  |  |  |  | Accumulated |  |  |
|  | Average Remaining |  | Gross |  | Amortization |  |  |  | Gross |  | Amortization |  |  |
|  | Amortization |  | Carrying |  | and |  | Net |  | Carrying |  | and |  | Net |
|  | Period |  | Amount |  | Impairment |  | Amount |  | Amount |  | Impairment |  | Amount |
|  | (in years) |  | (in thousands) |
Technology |  | 9.6 |  | $ | 222,358 |  | $ | 106,342 |  | $ | 116,016 |  | $ | 182,408 |  | $ | 97,524 |  | $ | 84,884 |
Customer relationships |  | 13.9 |  | 69,350 |  | 35,549 |  | 33,801 |  | 35,040 |  | 14,721 |  | 20,319 |
Trademarks and tradenames |  | 3.5 |  | 3,050 |  | 1,096 |  | 1,954 |  | 1,970 |  | 763 |  | 1,207 |
Indefinite-lived trademark |  | — |  | 2,900 |  | — |  | 2,900 |  | 2,900 |  | — |  | 2,900 |
IPR&D |  | — |  | 5,070 |  | 5,070 |  | — |  | 5,070 |  | — |  | 5,070 |
Other |  | 1.1 |  | 5,485 |  | 848 |  | 4,637 |  | 765 |  | 429 |  | 336 |
Total |  | 10.2 |  | $ | 308,213 |  | $ | 148,905 |  | $ | 159,308 |  | $ | 228,153 |  | $ | 113,437 |  | $ | 114,716 |
Schedule of estimated aggregate amortization expense for intangible assets with definite useful lives |
|  |  | Amortization |
|  |  | (in thousands) |
2015 |  |  | $ | 27,003 |
2016 |  |  | 20,969 |
2017 |  |  | 18,100 |
2018 |  |  | 16,492 |
2019 |  |  | 15,235 |
Thereafter |  |  | 58,609 |
Total |  |  | $ | 156,408 |

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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 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 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) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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