Note 13 - Stockholders' Equity (Details Textual) - $ / shares	Dec. 31, 2019	Dec. 31, 2018	May 22, 2018
Preferred Stock and Common Stock, Shares Authorized	32,800,000
Preferred Stock, Shares Authorized	30,000,000	30,000,000	30,000,000
Preferred Stock, Par or Stated Value Per Share	$ 0.001	$ 0.001	$ 0.001
Common Stock, Shares Authorized	2,800,000	2,800,000	350,000,000
Common Stock, Par or Stated Value Per Share	$ 0.125	$ 0.125	$ 0.001
Preferred Stock, Shares Issued, Total	0	0
Common Stock, Shares, Issued, Total	2,566,646	2,625,282
Common Stock, Shares, Outstanding, Ending Balance	2,566,646	2,544,776