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Convertible Notes (Tables) | 9 Months Ended
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Sep. 30, 2016
Debt Disclosure [Abstract] |
ReclassifiedUnamortizedDebtIssuanceCostsReportedInBalanceSheetTableTextBlock [Table Text Block] | The Company adopted ASU 2015-03 during the first quarter of 2016. Pursuant to the guidance in ASU 2015-03, the Company has reclassified unamortized debt issuance costs associated with the Company's 2018 Notes in the previously reported Consolidated Balance Sheet as of December 31, 2015, as follows:
(In thousands) |  | As presented December 31, 2015 |  | Reclassifications |  | As adjusted December 31, 2015
Other assets |  | $ | 3,648 |  |  | $ | (1,483 | ) |  | $ | 2,165 |
Convertible notes, long-term |  | 120,901 |  |  | (1,483 | ) |  | 119,418 |
Schedule of convertible notes | The Company’s convertible notes are shown in the following table:
(In thousands) |  | As of September 30, 2016 |  | As of December 31, 2015
1.125% Convertible Senior Notes due 2018 |  | $ | 138,000 |  |  | $ | 138,000 |
Unamortized discount |  | (12,496 | ) |  | (17,099 | )
Unamortized debt issuance costs |  | (1,061 | ) |  | (1,483 | )
Total convertible notes |  | $ | 124,443 |  |  | $ | 119,418 |
Less current portion |  | — |  |  | — |
Total long-term convertible notes |  | $ | 124,443 |  |  | $ | 119,418 |
Schedule of interest expense on notes | Interest expense related to the notes for the three and nine months ended September 30, 2016 and 2015 was as follows:
| Three Months Ended |  | Nine Months Ended
| September 30, |  | September 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
| (In thousands)
2018 Notes coupon interest at a rate of 1.125% | $ | 388 |  |  | $ | 388 |  |  | 1,164 |  |  | 1,179 |
2018 Notes amortization of discount and debt issuance costs at an additional effective interest rate of 5.5% | 1,699 |  |  | 1,605 |  |  | 5,025 |  |  | 4,744 |
Total interest expense on convertible notes | $ | 2,087 |  |  | $ | 1,993 |  |  | $ | 6,189 |  |  | $ | 5,923 |

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- Definition Tabular disclosure for the reclassification of debt issuance cost reported in the balance sheet. + References No definition available. + Details
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- Definition Tabular disclosure of the amounts of interest expense related to convertible notes during the reporting period. + References No definition available. + Details
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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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