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Debt (Tables) | 3 Months Ended
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Mar. 31, 2018
Debt Disclosure [Abstract] |
Principal Maturities of Long-term Debt | At March 31, 2018, the principal maturities of the long-term debt were as follows:
| March 31, 2018
2018 | — |
2019 | 4,999 |
Principal balance outstanding | 4,999 |
less: unamortized discount | (108 | )
less: unamortized debt issuance costs | (12 | )
Long-term debt | 4,879 |
Current portion | 776 |
Noncurrent portion | 4,103 |

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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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