Note 8 - Income Taxes - Net Deferred Tax Assets (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Net operating loss carryforwards	$ 6,507,000	$ 6,458,000
Valuation allowance	(6,507,000)	(6,458,000)
Net deferred tax assets	$ 0	$ 0