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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2018
Future Minimum Debt and Lease Payments | As of December 31, 2018, the future contractual principal and final fee payments on all of our debt and capital lease obligations are as follows (as thousands):
Years Ending December 31, |  |  |  |
2019 |  | $ | 8,653 |
2020 |  |  | 6,090 |
Total |  | $ | 14,743 |
Reconciliation of Face Value to Book Value as of December 31, 2018 |  |  |  |
Total debt and lease obligations, including final payment fee (Face Value) |  | $ | 14,743 |
Less: Debt discount |  |  | (541 | )
Total obligation |  | $ | 14,202 |
Payment on Lease Office and Manufacturing Space [Member] |
Future Minimum Debt and Lease Payments | As of December 31, 2018, we have contractual lease obligations to make payments on leases of office and manufacturing space as follows:
Years Ending December 31, |  | Obligation |
2019 |  | $ | 1,282 |
2020 |  |  | 638 |
2021 |  |  | 638 |
2022 |  |  | 192 |
Total |  | $ | 2,750 |

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- Definition Tabular disclosure of contractual obligation by timing of payment due. Includes, but is not limited to, long-term debt obligation, lease obligation, and purchase obligation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 303 -Paragraph (a) -Subparagraph (5) + Details
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