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Certain Balance Sheet Items (Tables) | 12 Months Ended
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Dec. 31, 2020
Balance Sheet Related Disclosures [Abstract] |
Schedule of Inventory, Current [Table Text Block] | The following table summarizes inventories (in thousands):
| December 31,
| 2020 |  | 2019
Raw materials | $ | 119 |  |  | $ | 92 |
Work in process | 167 |  |  | 137 |
Finished goods | 272 |  |  | 524 |
| $ | 558 |  |  | $ | 753 |
Schedule of Other Current Assets [Table Text Block] | The following table summarizes other current assets (in thousands):
| December 31,
| 2020 |  | 2019
Prepaid services | $ | 421 |  |  | $ | 23 |
Prepaid insurance | 158 |  |  | 184 |
Transition service agreement, related party | 115 |  |  | 345 |
Deferred cost - service contracts | 99 |  |  | 118 |
Other | 14 |  |  | — |
| $ | 807 |  |  | $ | 670 |
Property, Plant and Equipment [Table Text Block] | The following table summarizes property and equipment (in thousands):
| December 31,
| 2020 |  | 2019
Computer equipment(1) | $ | 291 |  |  | $ | 291 |
Accumulated depreciation(1) | (291) |  |  | (289) |
| $ | — |  |  | $ | 2 |
Schedule of Other Assets, Noncurrent [Table Text Block] | The following table summarizes other assets (in thousands):
| December 31,
| 2020 |  | 2019
Prepaid Insurance | $ | 385 |  |  | $ | 519 |
Deferred cost – service contracts | 56 |  |  | 154 |
Other | 2 |  |  | 4 |
| $ | 443 |  |  | $ | 677 |

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