Note 5 - Stockholders' Equity - Common Stock Reserved for Future Issuance (Details)	Dec. 31, 2023 shares
Common stock reserved for future issuance (in shares)	2,438,423
Share-Based Payment Arrangement, Option [Member]
Common stock reserved for future issuance (in shares)	134,609
Stock options authorized for future grants (in shares)	200,000
Warrants [Member]
Common stock reserved for future issuance (in shares)	2,103,814

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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Balance Type:	na
Period Type:	instant