Note 8 - Stockholders' Equity (Details Textual) - $ / shares	Jun. 30, 2023	Dec. 31, 2022
Common Stock, Shares Authorized	150,000,000	150,000,000
Preferred Stock, Shares Authorized	5,000,000	5,000,000
Preferred Stock, Par or Stated Value Per Share	$ 0.0001	$ 0.0001