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Note 12 - Subsequent Events (Details Textual) - Subsequent Event [Member] - USD ($) | Feb. 20, 2024 | Feb. 07, 2024 | Jan. 18, 2024 | Jan. 09, 2024
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BioVaxys Technology Corp. [Member] | HIMV LLC [Member] |  |  |  |
Proceeds from Sale of Productive Assets | $ 750,000 |  |  |
Disposal Group, Consideration, Stock | $ 250,000 |  |  |
Better Place Forests Co. [Member] |  |  |  |
Payments to Acquire Investments |  |  |  | $ 800,000
Nexii Building Solutions, Inc [Member] |  |  |  |
Payments to Acquire Investments |  |  | $ 900,000 |
Ceribell, Inc. [Member] |  |  |  |
Payments to Acquire Investments |  | $ 14,000,000 |  |
Repayments of Debt |  | $ 11,300,000 |  |

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- Definition The cash outflow associated with the purchase of all investments (debt, security, other) during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-13 + Details
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- Definition The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 12 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-12 + Details
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- Definition Amount of cash outflow for short-term and long-term debt. Excludes payment of lease obligation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 15 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-15 + Details
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