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Note 2 - Summary of Significant Accounting Policies - Outstanding Stock Warrants Excluded from the Diluted Net Loss Per Share Computation (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Anti-dilutive securities (in shares)	4,776	495
Series B Preferred Stock [Member]
Anti-dilutive securities (in shares)	15	103
Series C Preferred Stock [Member]
Anti-dilutive securities (in shares)	0	148
Share-Based Payment Arrangement, Option [Member]
Anti-dilutive securities (in shares)	7	3
Warrant [Member]
Anti-dilutive securities (in shares)	4,754	241

X

- Definition

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.

+ References

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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