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Note 6 - Intangible Assets | 12 Months Ended
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Dec. 31, 2022
Notes to Financial Statements |
Intangible Assets Disclosure [Text Block] | Note 6 – Intangible Assets Intangible assets consisted of the following (in thousands):
December 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |
|  | Cost |  |  | Accumulated Amortization |  |  | Net |
Patents |  | $ | 565 |  |  | $ | 446 |  |  | $ | 119 |
Certifications |  |  | 54 |  |  |  | 54 |  |  |  | - |
Totals |  | $ | 619 |  |  | $ | 500 |  |  | $ | 119 |
December 31, 2021 |  |  |  |  |  |  |  |  |  |  |  |
|  | Cost |  |  | Accumulated Amortization |  |  | Net |
Patents |  | $ | 602 |  |  | $ | 422 |  |  | $ | 180 |
Certifications |  |  | 54 |  |  |  | 51 |  |  |  | 3 |
Totals |  | $ | 656 |  |  | $ | 473 |  |  | $ | 183 |
Amortization expense was $0.1 million in both years ended December 31, 2022 and 2021. The estimated amortization expense related to intangible assets for each of the five succeeding fiscal years and thereafter as of December 31, 2022 is as follows (in thousands):
Year Ended |  |  |  |
2023 |  | $ | 17 |
2024 |  |  | 13 |
2025 |  |  | 13 |
2026 |  |  | 5 |
2027 |  |  | 5 |
Thereafter |  |  | 66 |
Total |  | $ | 119 |

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -URI https://asc.fasb.org/subtopic&trid=2144471 + Details
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