Note 3 - Summary of Significant Accounting Policies - Outstanding Dilutive Securities (Details) - shares	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024
Antidilutive securities (in shares)	3,597,045	3,167,172
Convertible Preferred Stock [Member]
Antidilutive securities (in shares)	2,601,671	2,633,868
Share-Based Payment Arrangement, Option [Member]
Antidilutive securities (in shares)	995,374	533,304

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

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