Note 13 - Related Party Transaction (Details Textual) |
12 Months Ended |
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Dec. 31, 2021
USD ($)
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| Vice President [Member] | Consulting Services [Member] | Research and Development Expense [Member] | |
| Related Party Transaction, Amounts of Transaction | $ 149,000 |
| X | ||||||||||
- Definition Amount of transactions with related party during the financial reporting period. 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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| X | ||||||||||
- Details
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