Note 9 - Net Loss per Share - Schedule of Antidilutive Securities (Details) - shares	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025
Antidilutive securities (in shares)	5,891,633	5,540,307
Share-Based Payment Arrangement, Option [Member]
Antidilutive securities (in shares)	4,993,011	4,641,685
Warrant [Member]
Antidilutive securities (in shares)	898,622	898,622

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