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Other Current Assets (Tables) | 6 Months Ended
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Jun. 30, 2018
Other Current Assets Disclosure [Abstract] |
Schedule of Other Current Assets [Table Text Block] |
| As of June 30, 2018 |  | As of December 31, 2017
Sales and use taxes | $ | 402 |  |  | $ | 174 |
Prepaid expenses | 252 |  |  | 196 |
Other | 178 |  |  | 163 |
Other current assets | $ | 832 |  |  | $ | 533 |

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- Definition Tabular disclosure of the carrying amounts of other current assets. + References No definition available. + Details
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