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Debt (Tables) | 6 Months Ended
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Jun. 30, 2018
Debt Disclosure [Abstract] |
Schedule of Net Carrying Amount of Notes and Impact to Additional Paid-in Capital | The net carrying amount of the liability component of the Notes is as follows (in thousands):
|  |  |  | June 30, 2018
Principal |  |  |  | $ | 258,750 |
Unamortized debt discount |  |  |  | (62,174 | )
Unamortized issuance costs |  |  |  | (5,961 | )
Net carrying amount |  |  |  | $ | 190,615 |
The net carrying amount of the equity component of the Notes is as follows (in thousands):
|  |  |  | June 30, 2018
Debt discount for conversion option |  |  |  | $ | 63,756 |
Issuance costs |  |  |  | (1,998 | )
Net carrying amount |  |  |  | $ | 61,758 |
The net impact to the Company’s stockholders’ equity, included in additional paid-in capital, relating to the issuance of the Notes is as follows (in thousands):
Conversion option |  |  |  | $ | 63,756 |
Payments for capped call transactions |  |  |  | (31,412 | )
Issuance costs |  |  |  | (1,998 | )
Total |  |  |  | $ | 30,346 |
Schedule of Interest Expense Related to the Notes | Interest expense related to the Notes is as follows (in thousands):
|  |  |  | Three Months Ended June 30, 2018
Contractual interest expense |  |  |  | $ | 48 |
Amortization of debt discount |  |  |  | 1,582 |
Amortization of issuance costs |  |  |  | 151 |
Total interest expense |  |  |  | $ | 1,781 |
Schedule of Outstanding Debt | As of June 30, 2018 and December 31, 2017, the Company’s outstanding debt is summarized as follows (in thousands):
|  | June 30, 2018 |  | December 31, 2017
Note payable - FCC civil penalty, gross |  | $ | — |  |  | $ | 333 |
Less: discount |  | — |  |  | (7 | )
Note payable, net carrying value |  | — |  |  | 326 |
Convertible senior notes |  | 190,615 |  |  | — |
Revolving line of credit |  | — |  |  | 32,594 |
Interest accretion under 2016 line of credit |  | 31 |  |  | 10 |
Total debt, net carrying value |  | $ | 190,646 |  |  | $ | 32,930 |
Less: current portion of debt * |  | $ | 31 |  |  | $ | 336 |
Total debt, less current portion ** |  | $ | 190,615 |  |  | $ | 32,594 |
* Included in ‘Notes payable’ in the condensed consolidated balance sheets.
** Included in ‘Convertible senior notes’ and ‘Revolving line of credit’ as of June 30, 2018 and December 31, 2017, respectively, in the condensed consolidated balance sheets.
Schedule of Maturities of Debt | Maturities of the Company’s outstanding debt as of June 30, 2018 are as follows (in thousands):
Period |  | Amount to Mature
2018 |  | $ | 31 |
2023 |  | 258,750 |
Total |  | $ | 258,781 |

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- Definition Tabular disclosure of borrowings which can be exchanged for a specified number of another security at the option of the issuer or the holder. Disclosures include, but are not limited to, principal amount, amortized premium or discount, and amount of liability and equity components. + References No definition available. + Details
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- Definition Tabular disclosure of interest income and expense, including, but not limited to, interest income and expense from investments, loans, and securities. + References No definition available. + Details
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- Definition Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(e),(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644 Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823 Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 + Details
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- Definition Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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