Note 8 - Income Taxes (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%	35.00%
Domestic Tax Authority [Member]
Operating Loss Carryforwards	$ 82.6
State and Local Jurisdiction [Member]
Operating Loss Carryforwards	$ 97.4