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Note 6 - Intangible Assets, Net (Tables) | 12 Months Ended
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Dec. 31, 2018
Notes Tables |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  |  |  |  |  | Year ended December 31, 2017 |  |  | Year ended December 31, 2018 |
|  | Weighted Average Amortization P eriod ( Y ears) |  |  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net |  |  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net |
Intangible assets –amortizable: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer relationships |  |  | 4.5 |  |  | $ | 272 |  |  | $ | 211 |  |  | $ | 61 |  |  | $ | 272 |  |  | $ | 272 |  |  | $ | — |
Customer backlog |  |  | 1.5 |  |  |  | 93 |  |  |  | 93 |  |  |  | — |  |  |  | 93 |  |  |  | 93 |  |  |  | — |
Core technologies |  |  | 5.1 |  |  |  | 5,796 |  |  |  | 4,115 |  |  |  | 1,681 |  |  |  | 5,796 |  |  |  | 4,955 |  |  |  | 841 |
NB-IoT technologies |  |  | 7.0 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 2,200 |  |  |  | 341 |  |  |  | 1,859 |
Total intangible assets |  |  |  |  |  | $ | 6,161 |  |  | $ | 4,419 |  |  | $ | 1,742 |  |  | $ | 8,361 |  |  | $ | 5,661 |  |  | $ | 2,700 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
2019 |  |  | 1,155 |
2020 |  |  | 314 |
2021 |  |  | 314 |
2022 |  |  | 314 |
2023 |  |  | 314 |
2024 |  |  | 289 |
|  | $ | 2,700 |

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