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Note 2 - Fair Value of Financial Instruments - Financial Instruments (Details) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Estimate of Fair Value Measurement [Member]
Total	$ 8,742,366	$ 9,046,364
Reported Value Measurement [Member]
Total	8,750,791	9,071,862
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Cash and Cash Equivalents Excluding Certificates of Deposit [Member]
Cash and cash equivalents, fair value	7,243,336	7,546,689
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Certificates of Deposit [Member]
Cash and cash equivalents, fair value	1,507,455	1,525,173
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Cash and Cash Equivalents Excluding Certificates of Deposit [Member]
Cash and cash equivalents, fair value	7,243,336	7,546,689
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Certificates of Deposit [Member]
Cash and cash equivalents, fair value	$ 1,499,030	$ 1,499,675

X

- Definition

Fair value portion of asset recognized for present right to economic benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 100
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-100

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 3: 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

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X

- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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