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Note 4 - Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2021
Notes Tables |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  | Customer Relationships |  |  | Intellectual Property |  |  | Trade Names |  |  | Patents |  |  | Total |
Balance at January 1, 2020 |  | $ | 651 |  |  | $ | 5 |  |  | $ | 631 |  |  | $ | 56 |  |  | $ | 1,343 |
Additions |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 21 |  |  |  | 21 |
Amortization |  |  | 144 |  |  |  | 5 |  |  |  | 42 |  |  |  | - |  |  |  | 191 |
Balance at December 31, 2020 |  | $ | 507 |  |  | $ | - |  |  | $ | 589 |  |  | $ | 77 |  |  | $ | 1,173 |
Additions |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 64 |  |  |  | 64 |
Amortization |  |  | 147 |  |  |  | - |  |  |  | 29 |  |  |  | - |  |  |  | 176 |
Abandonment Loss |  |  | - |  |  |  | - |  |  |  | 560 |  |  |  | - |  |  |  | 560 |
Balance at December 31, 2021 |  | $ | 360 |  |  | $ | - |  |  | $ | - |  |  | $ | 141 |  |  | $ | 501 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
Year |  | Amount |
2022 |  | $ | 145 |
2023 |  |  | 145 |
2024 |  |  | 71 |
Total |  | $ | 361 |

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