Note 4 - Income Tax Matters (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Effective Income Tax Rate Reconciliation, Percent, Total			35.00%
Income Tax Expense (Benefit), Total	$ 81,163	$ 432	$ (33,340)	$ 37,267
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount			$ 7,638	$ (15,805)