Note 4 - Segment Reporting (Details Textual)	3 Months Ended
Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)
Number of Operating Segments	3
Revenues, Total	$ 181,918	$ 154,876
Intersegment Eliminations [Member]
Revenues, Total	$ 0

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details