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Note 5 - Inventories (Tables) | 12 Months Ended
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Dec. 31, 2019
Notes Tables |
Schedule of Inventory, Current [Table Text Block] |
|  | December 31,
|  | 2019 |  | 2018
Raw materials |  | $ | 10,540 |  |  | $ | 11,727 |
Work in process |  |  | 2,279 |  |  |  | 2,521 |
Finished goods |  |  | 5,457 |  |  |  | 5,328 |
Total Inventory |  | $ | 18,276 |  |  | $ | 19,576 |

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