Note 9 - Net Loss Per Share - Anti-dilutive Securities (Details) - shares	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024
common stock equivalents (in shares)	3,316,087	364,635
Share-Based Payment Arrangement, Option [Member]
common stock equivalents (in shares)	167,469	155,642
Warrant [Member]
common stock equivalents (in shares)	3,148,618	208,993

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482662/260-10-50-1

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration