Note 8 - Net Loss Per Share - Schedule of Antidilutive Securities (Details) - shares	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Convertible Series F Preferred Stock [Member]
Antidilutive securities (in shares)	45,754	51,357
Series F Preferred Warrants [Member]
Antidilutive securities (in shares)	8,097,347	2,784,922
Common Stock Warrants [Member]
Antidilutive securities (in shares)	2,688,728	2,272,203

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