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Note 2 - Liquidity and Capital Resources (Details Textual) - USD ($) |  | 1 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Aug. 16, 2023 | Jul. 31, 2023 | Jan. 31, 2023 | Sep. 30, 2023 | Sep. 30, 2022 | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2022
Retained Earnings (Accumulated Deficit) |  |  |  | $ (52,078,391) |  | $ (54,228,753) | $ (52,803,252) | $ (52,268,916)
Government Assistance, Amount, Cumulative |  |  | $ 21,000,000.0 |  |  |  |  |
Government Assistance, Transaction Duration |  |  | 3 years |  |  |  |  |
Proceeds from Issuance of Common Stock |  | $ 800,000 |  | $ 810,000 | $ 0 |  |  |
Merger Agreement [Member] |  |  |  |  |  |  |  |
Cash Acquired from Acquisition | $ 12,700,000 |  |  |  |  |  |  |

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- Definition The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-12 + Details
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