Note 9 - Patents and Trademarks, Net (Details Textual) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Intangible Asset, Finite-Lived, Amortization Expense | $ 4 | $ 4 | $ 10 | $ 11 |
| Minimum [Member] | ||||
| Intangible Asset, Finite-Lived, Useful Life (Year) | 10 years | 10 years | ||
| Maximum [Member] | ||||
| Intangible Asset, Finite-Lived, Useful Life (Year) | 17 years | 17 years | ||
| X | ||||||||||
- Definition Amount of amortization expense for finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Useful life of finite-lived intangible asset, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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