Note 13 - Loss Per Share - Antidilutive Securities Excluded from the Diluted Calculations (Details) - shares	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Share-Based Payment Arrangement, Option [Member]
Antidilutive Securities (in shares)	47,664	49,053
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities (in shares)	0	4,167
Warrant [Member]
Antidilutive Securities (in shares)	1,806,589	1,816,437
Series B Convertible Preferred Stock [Member]
Antidilutive Securities (in shares)	16	16

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