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Note 6 - Other Assets (Details Textual)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Number of Publicly Traded REITs in which Common Shares are Owned	19
Number of Publicly Traded REITs in which Options are Owned	10
Marketable Securities, Total	$ 1,514,483	$ 83,000
Number of Publicly Traded REITs in which Shares and Options are Owned		2
Marketable Securities, Real Estate Investment Trust [Member]
Investments, Fair Value Disclosure, Total	1,522,137
Marketable Securities, Real Estate Investment Trust [Member] | Covered Call Option Contract [Member]
Derivative, Fair Value, Net, Total	$ 2,254

X

- 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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X

- 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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X

- Definition

Represents the number of publicly traded REITs in which the reporting entity owns shares and options as of the specified date.

+ References

No definition available.

+ Details

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X

- 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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

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- Definition

Amount of investment in marketable security.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.4)
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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