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Financing Arrangements (Tables) | 9 Months Ended
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Sep. 30, 2014
Debt Disclosure [Abstract] |
Summary of carrying values and coupon rates on financing arrangements | The carrying values and the fixed contractual coupon rates of the Company's financing arrangements as of September 30, 2014 and December 31, 2013 were as follows (in thousands):
| September 30, 2014 |  | December 31, 2013
2019 Convertible Senior Notes |  |  |
Principal amount outstanding | $ | 245,000 |  |  | $ | — |
Unamortized discount | (51,369 | ) |  | — |
Net carrying amount | 193,631 |  |  | — |
Convertible notes payable, Viking Therapeutics, Inc. | 337 |  |  | — |
Current portion notes payable, 8.64%, due August 1, 2014 | — |  |  | 6,642 |
Current portion notes payable, 8.9012%, due August 1, 2014 | — |  |  | 2,467 |
Total notes payable | $ | 193,968 |  |  | $ | 9,109 |

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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