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Long-Term Debt (Tables) | 9 Months Ended
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Sep. 30, 2016
Debt Disclosure [Abstract] |
Notes Payable | Total convertible notes payable consisted of the following at (in thousands):
|  | September 30, 2016 |  | December 31, 2015 |
Principal amount of Notes |  | $ | 325,000 |  | $ | — |
Unamortized debt issuance costs |  |  | (9,017) |  |  | — |
Total convertible notes payable |  | $ | 315,983 |  | $ | — |
Interest Expense | Interest expense incurred in connection with the Notes consisted of the following (in thousands):
|  | Three Months Ended September 30, |  | Nine Months Ended September 30, |
|  | 2016 |  | 2015 |  | 2016 |  | 2015 |
Coupon interest |  | $ | 3,047 |  | $ | — |  | $ | 8,193 |  | $ | — |
Amortization of debt issuance costs |  |  | 356 |  |  | — |  |  | 949 |  |  | — |
Total interest expense on Notes |  | $ | 3,403 |  | $ | — |  | $ | 9,142 |  | $ | — |

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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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