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INTANGIBLE ASSETS AND GOODWILL (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Intangible Assets and Goodwill |  |  |
Goodwill | $ 8,965,000 | $ 8,965,000 |
Finite-lived intangible asset |  |  |
Accumulated Amortization | (3,763,000) | (3,325,000) |
Total Intangible Assets |  |  |
Cost of total intangible assets | 27,596,000 | 28,248,000 |
Net total intangible assets | 23,833,000 | 24,923,000 |
Amortization expense for intangible assets | 1,090,000 | 1,913,000 | 3,143,000
Estimated future amortization expense of intangible assets |  |  |
2013 | 1,000,000 |  |
2014 | 1,000,000 |  |
2015 | 1,000,000 |  |
2016 | 1,000,000 |  |
2017 | 900,000 |  |
Amgen Amendment |  |  |
Finite-lived intangible asset |  |  |
Estimated Life | 16 years |  |
Cost | 14,500,000 | 14,500,000 |
Accumulated Amortization | (2,915,000) | (2,018,000) |
Net | 11,585,000 | 12,482,000 |
Core Technology |  |  |
Finite-lived intangible asset |  |  |
Estimated Life | 11 years |  |
Cost | 1,296,000 | 1,948,000 |
Accumulated Amortization | (848,000) | (1,307,000) |
Net | 448,000 | 641,000 |
IPR&D |  |  |
Indefinite-lived intangible assets: |  |  |
Indefinite-lived intangible assets | $ 11,800,000 | $ 11,800,000 |

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- Definition Sum of the gross carrying amounts before accumulated amortization of all intangible assets, excluding goodwill, as of the balance sheet date. The aggregate gross carrying amount (including any previously recognized impairment charges) of a major finite-lived and indefinite lived intangible asset class. + References No definition available. + Details
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