Note 7 - Income Taxes - Components of Deferred Income Tax Assets (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Stock compensation benefit	$ 187,030	$ 219,778
Net operating loss carryforward	1,938,103	2,618,411
Total long-term deferred tax assets	2,125,133	2,838,189
Valuation allowance	(2,125,133)	(2,838,189)
Net deferred tax assets