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Debt (Tables) | 12 Months Ended
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Dec. 31, 2016
Debt Disclosure [Abstract] |
Debt | Debt at December 31, 2016, consisted of the following (in thousands):
|  | December 31, 2016 |
|  | Principal |  |  | Unamortized Discount |  |  | Net Carrying Value |
Loan and Security Agreement |  | $ | 19,499 |  |  | $ | (124 | ) |  | $ | 19,375 |
Less: debt - current |  |  | (7,013 | ) |  |  | 79 |  |  |  | (6,934 | )
Debt - non-current |  | $ | 12,486 |  |  | $ | (45 | ) |  | $ | 12,441 |
Debt at December 31, 2015, consisted of the following (in thousands):
|  | December 31, 2015 |
|  | Principal |  |  | Unamortized Discount |  |  | Total |
Loan and Security Agreement |  | $ | 20,000 |  |  | $ | (196 | ) |  | $ | 19,804 |
Less: debt - current |  |  | (3,050 | ) |  |  | 94 |  |  |  | (2,956 | )
Debt - non-current |  | $ | 16,950 |  |  | $ | (102 | ) |  | $ | 16,848 |
Expected Principal and Interest Payments on Debt | Principal and interest payments on debt at December 31, 2016, are expected to be as follows:
Year ended December 31, |  | Principal |  |  | Interest |  |  | Total |
2017 |  |  | 7,013 |  |  |  | 1,160 |  |  |  | 8,173 |
2018 |  |  | 8,178 |  |  |  | 613 |  |  |  | 8,791 |
2019 |  |  | 4,308 |  |  |  | 1,488 |  |  |  | 5,796 |
Total |  | $ | 19,499 |  |  | $ | 3,261 |  |  | $ | 22,760 |

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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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