Note 3 - Summary of Significant Accounting Policies (Details Textual) - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Research Grant, Recognized, Research Activities Performed 2018 | $ 205,000 | $ 856,000 |
| Research and Development Expense [Member] | ||
| Patent Expense | $ 105,000 | $ 87,000 |
| Office Equipment [Member] | Minimum [Member] | ||
| Property, Plant and Equipment, Useful Life (Year) | 3 years | |
| Office Equipment [Member] | Maximum [Member] | ||
| Property, Plant and Equipment, Useful Life (Year) | 10 years | |
| Computer Equipment [Member] | ||
| Property, Plant and Equipment, Useful Life (Year) | 4 years | |
| X | ||||||||||
- Definition The amount of expense associated with gaining and maintaining certain patents. No definition available.
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| X | ||||||||||
- Definition The amount of research grant recognized for research activities performed 2018. No definition available.
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| X | ||||||||||
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. No definition available.
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