Note 8 - Common Stock (Details Textual) - $ / shares	Dec. 31, 2019	Dec. 31, 2018
Common Stock, Shares Authorized	100,000,000	100,000,000
Common Stock, Par or Stated Value Per Share	$ 0.001	$ 0.001
Common Stock, Shares, Issued, Total	557,631	481,091
Common Stock, Shares, Outstanding, Ending Balance	557,631	481,091