Note 3 - Note Receivable (Details Textual) - USD ($)	1 Months Ended		9 Months Ended
	Sep. 30, 2023	Feb. 28, 2021	Sep. 30, 2023
Payments to Acquire Notes Receivable	$ 450,000		$ 450,000
Notes Receivable, Stated Interest Rate	5.25%		5.25%
Financing Receivable, after Allowance for Credit Loss, Current	$ 240,000		$ 240,000
Financing Receivable, after Allowance for Credit Loss, Noncurrent	$ 210,000		$ 210,000
Privately-Held Identity and Professional Services Company With Ties to the FinTech Industry [Member]
Payments to Acquire Notes Receivable		$ 550,000
Notes Receivable, Stated Interest Rate		4.60%