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Note 7 - Concentrations - Customers Representing 5% or More of Total Revenue (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Major Customers 1 [Member]
Revenue by customer	$ 21,743	$ 54,300
Major Customers 2 [Member]
Revenue by customer	19,307	13,990
Major Customers 3 [Member]
Revenue by customer	18,855	11,359
Major Customers 4 [Member]
Revenue by customer	18,650	10,563
Major Customers 5 [Member]
Revenue by customer	$ 14,936	$ 9,583

X

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130545-203045

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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