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Note 6 - Other Assets (Details Textual) | Jun. 30, 2023 USD ($) | Dec. 31, 2022 USD ($)
--- | --- | ---
Number of Publicly Traded REITs in which Common Shares are Owned | 18 | 18
Number of Publicly Traded REITs in which Options are Owned | 2 | 3
Investments, Fair Value Disclosure |  | $ 798,206
Derivative, Fair Value, Net | $ 395 |
Marketable Securities | 759,600 | 797,749
Marketable Securities, Real Estate Investment Trust [Member] | Covered Call Option Contract [Member] |  |
Investments, Fair Value Disclosure | $ 759,995 |
Derivative, Fair Value, Net |  | $ 457

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- Definition Represents the number of publicly traded REITs in which the reporting entity owns common shares as of the specified date. + References No definition available. + Details
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- Definition Represents the number of publicly traded REITs in which the reporting entity owns options as of the specified date. + References No definition available. + Details
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- Definition Fair value of the assets less the liabilities of a derivative or group of derivatives. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-10 + Details
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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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- Definition Amount of investment in marketable security. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
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