Note 10 - Income Taxes (Details Textual) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Capital Loss Carryforward [Member]
Tax Credit Carryforward, Amount	$ 27,000
Research Tax Credit Carryforward [Member]
Tax Credit Carryforward, Amount	1,134,000
Deferred Tax Assets, Valuation Allowance	$ 475,000	$ 475,000