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Long-term debt, net (Tables) | 12 Months Ended
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Dec. 31, 2017
Debt Disclosure [Abstract] |
Schedule of Long-term Debts, Including Promissory Notes Payable to Certain Shareholders, Net | Long-term debt, net, including promissory notes payable to certain shareholders, net, as of December 31, 2017, consist of the following:
|  | 12% term loan, |  |  | 12% incremental term loan, |  |  | 10% promissory notes, |  |  |  |  |
(In thousands) |  | due 2020 |  |  | due 2020 |  |  | due 2021 |  |  | Total |
Principal amount |  | $ | 40,688 |  |  | $ | 14,312 |  |  | $ | 10,000 |  |  | $ | 65,000 |
Less: unamortized debt issuance costs |  |  | (2,753 | ) |  |  | (672 | ) |  |  | (312 | ) |  |  | (3,737 | )
Add: PIK interest accrued to the principal balance |  |  | 542 |  |  |  | 9 |  |  |  | 1,149 |  |  |  | 1,700 |
Long-term debt, net |  |  | 38,477 |  |  |  | 13,649 |  |  |  | 10,837 |  |  |  | 62,963 |
Less: Current portion of long-term debt |  |  | (2,062 | ) |  |  | (688 | ) |  |  | - |  |  |  | (2,750 | )
Long-term debt, net (non-current) |  | $ | 36,415 |  |  | $ | 12,961 |  |  | $ | 10,837 |  |  | $ | 60,213 |
Long-term debt, net, including promissory notes payable to certain shareholders, net, as of December 31, 2016, consist of the following:
|  | 12% term loan, |  |  | 10% promissory notes, |  |  |  |  |
(In thousands) |  | due 2020 |  |  | due 2021 |  |  | Total |
Principal amount |  | $ | 42,750 |  |  |  | 10,000 |  |  | $ | 52,750 |
Less: unamortized debt issuance costs |  |  | (3,964 | ) |  |  | (384 | ) |  |  | (4,348 | )
Add: PIK interest accrued to the principal balance |  |  | 479 |  |  |  | 1,132 |  |  |  | 1,611 |
Long-term debt, net |  |  | 39,265 |  |  |  | 10,748 |  |  |  | 50,013 |
Less: Current portion of long-term debt |  |  | (4,135 | ) |  |  | - |  |  |  | (4,135 | )
Long-term debt, net (non-current) |  | $ | 35,130 |  |  | $ | 10,748 |  |  | $ | 45,878 |
Schedule of Assumptions Used to Estimate Fair Value of Warrants | We estimate the fair value of such warrants on the date of grant or amendment using a Black-Scholes pricing model, applying the following assumptions, and amortize the fair value to interest expense over the term of the Term Loans using the interest method:
|  | Year Ended December 31,
|  | 2017 |  | 2016 |  | 2015
Expected term (in years) |  | 0.08 - 9 |  | 10 |  | 10
Risk-free interest rate |  | 1.02% - 2.35% |  | 1.56% |  | 2.24%
Expected volatility |  | 82.50% |  | 90.47% |  | 114.33%
Expected dividend yield |  | 0.00% |  | 0.00% |  | 0.00%
Scheduled Future Maturities of Total Debts | Excluding potential additional principal payments due on the Term Loans based on excess cash flows for the immediately preceding fiscal year, as mentioned above, scheduled future maturities of total debts as of December 31, 2017 were as follows:
(In thousands) |  |  |  |
Year |  |  |  |
2018 |  | $ | 2,750 |
2019 |  |  | 2,750 |
2020 |  |  | 49,500 |
2021 |  |  | 10,000 |
Total maturities |  |  | 65,000 |
Add: Accrued PIK interest, added to the principal |  |  | 1,700 |
Less: Unamortized debts issuance costs |  |  | (3,737 | )
Total |  | $ | 62,963 |

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- Definition Tabular disclosure of the inputs and valuation techniques used to measure fair value, and a discussion of changes in valuation techniques and related inputs, if any, applied during the period to each separate class of assets, liabilities, and financial instruments classified in shareholders' equity that are measured on a recurring and/or nonrecurring basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + 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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- 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://www.xbrl.org/2003/role/presentationRef -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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