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Intangible Assets and Goodwill (Tables) | 3 Months Ended
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Mar. 31, 2013
Intangible Assets and Goodwill |
Schedule of intangible assets, net of accumulated amortization, and goodwill |
|  |  |  | March 31, 2013 |  | December 31, 2012 |
|  | Estimated Life |  | Cost |  | Accumulated Amortization |  | Net |  | Cost |  | Accumulated Amortization |  | Net |
|  |  |  | (In thousands) |
Intangible Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
IPR&D |  | Indefinite |  | $ | 11,800 |  | $ | — |  | $ | 11,800 |  | $ | 11,800 |  | $ | — |  | $ | 11,800 |
Amgen Amendment |  | 16 years |  | 14,500 |  | (3,139 | ) | 11,361 |  | 14,500 |  | (2,915 | ) | 11,585 |
Core Technology |  | 11 years |  | 1,296 |  | (877 | ) | 419 |  | 1,296 |  | (848 | ) | 448 |
Total Intangible Assets |  |  |  | $ | 27,596 |  | $ | (4,016 | ) | $ | 23,580 |  | $ | 27,596 |  | $ | (3,763 | ) | $ | 23,833 |
Goodwill |  | Indefinite |  | $ | 8,965 |  | $ | — |  | $ | 8,965 |  | $ | 8,965 |  | $ | — |  | $ | 8,965 |

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- Definition Tabular disclosure of goodwill and intangible assets, which may be broken down by segment or major class. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 + Details
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