Note 4 - Income Taxes (Details Textual) - Jun. 30, 2015 - USD ($) $ in Millions	Total
State and Local Jurisdiction [Member]
Deferred Tax Assets, Valuation Allowance	$ 1.0
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	$ 1.6