Note 1 - Organization and Summary of Significant Accounting Policies (Details Textual)	3 Months Ended
Mar. 31, 2023 $ / shares shares	Mar. 31, 2022 shares	Dec. 31, 2022 $ / shares
Common Stock, Par or Stated Value Per Share \| $ / shares	$ 0.0001		$ 0.0001
Number of Wholly-owned Subsidiaries	1
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount \| shares	5,127,830	5,350,111

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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Period Type:	duration