Note 24 - Subsequent Events (Details Textual)		Jan. 18, 2023 shares	Jan. 17, 2023 shares	Dec. 31, 2022 $ / shares shares	Dec. 31, 2021 $ / shares shares
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares				$ 0.001	$ 0.001
Common Stock, Shares Authorized (in shares)				20,000,000	20,000,000
Common Stock, Shares, Issued (in shares)	[1]			7,174,506	7,075,506
Common Stock, Shares, Outstanding, Ending Balance (in shares)	[1]			7,174,506	7,075,506
Subsequent Event [Member]
Common Stock, Shares Authorized (in shares)		20,000,000	100,000,000
Common Stock, Shares, Issued (in shares)		7,174,506	35,827,677
Common Stock, Shares, Outstanding, Ending Balance (in shares)		7,174,506	35,827,677
Reverse Stock Split [Member] | Subsequent Event [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio		5

[1] Retrospectively restated for effect of the 1-for-5 reverse stock split on January 18, 2023, see Note 4(l).