Note 9 - Income Taxes (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2015	Dec. 31, 2014
Note 9 - Income Taxes (Details) [Line Items]
Effective Income Tax Rate Reconciliation, Percent	0.00%	0.00%	0.00%	0.00%
Deferred Tax Assets, Operating Loss Carryforwards, Domestic						$ 13,900,000
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ 0
Unrecognized Tax Benefits						97,000
Domestic Tax Authority [Member]
Note 9 - Income Taxes (Details) [Line Items]
Operating Loss Carryforwards						14,487,000
State and Local Jurisdiction [Member]
Note 9 - Income Taxes (Details) [Line Items]
Operating Loss Carryforwards						$ 14,475,000
Scenario, Forecast [Member]
Note 9 - Income Taxes (Details) [Line Items]
Effective Income Tax Rate Reconciliation, Percent					0.00%