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Note 7 - Concentrations - Customers Representing 5% or More of Total Revenue (Details) - USD ($)	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Major Customers 1 [Member]
Revenue by customer	$ 54,300	$ 59,905
Major Customers 2 [Member]
Revenue by customer	49,324	22,407
Major Customers 3 [Member]
Revenue by customer	28,679	20,078
Major Customers 4 [Member]
Revenue by customer	26,644	14,561
Major Customers 5 [Member]
Revenue by customer	$ 24,535	$ 14,172

X

- Definition

Amount, including 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
-Publisher FASB
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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