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Other Financial Statement Information (Tables) | 12 Months Ended
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Dec. 31, 2017
Other Financial Statement Information [Abstract] |
Schedule of inventories |
|  | December 31, |  |  | December 31, |
|  | 2017 |  |  | 2016 |
Finished goods |  | $ | 719 |  |  | $ | 138 |
Work-in-process |  |  | 132 |  |  |  | 447 |
Total inventories |  | $ | 851 |  |  | $ | 585 |
Schedule of supplemental cash flow information |
|  | 2017 |  |  | 2016 |
Cash paid for interest |  | $ | 640 |  |  | $ | 363 |
Cash paid for taxes |  | $ | 5 |  |  | $ | 11 |
Non-cash Investing and Financing Activities |  |  |  |  |  |  |  |
Noncash preferred stock dividends |  | $ | 246 |  |  | $ | 463 |
Issuance of notes in exchange for accounts payable |  | $ | - |  |  | $ | 288 |
Issuance of stock upon conversion of preferred stock |  | $ | 2,246 |  |  | $ | 307 |
Issuance of warrants with term loan extensions |  | $ | 2,218 |  |  |  | 361 |
Issuance of stock in exchange for accounts payable |  | $ | - |  |  | $ | 86 |

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