Note 7 - Income Taxes (Details Textual) - USD ($)	12 Months Ended			36 Months Ended	54 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2020	Jun. 30, 2022	Dec. 31, 2021
Deferred Tax Assets, Net of Valuation Allowance, Total					$ 1,500,000
Deferred Tax Assets, Valuation Allowance					5,200,000
Operating Loss Carryforwards, Total					29,455,176	$ 29,500,000
Net Operating Loss That Can Be Carried Forward Indefinitely	$ 2,272,315	$ 2,730,461	$ 4,410,916	$ 9,413,692	$ 9,413,692
Expiring in 2021 [Member]
Operating Loss Carryforwards, Total						$ 10,700,000