Note 9 - Equity Compensation - Weighted Average Assumptions Were Used for the Warrants (Details)	Feb. 21, 2017 yr
Measurement Input, Expected Dividend Rate [Member]
Measurement input	0.0201
Measurement Input, Price Volatility [Member]
Measurement input	0.39
Measurement Input, Risk Free Interest Rate [Member]
Measurement input	0.018
Measurement Input, Expected Term [Member]
Measurement input	4.5