Note 8 - Income Taxes (Details Textual) - Jun. 30, 2015 - USD ($) |
Total |
|---|---|
| Earliest Tax Year [Member] | |
| Open Tax Year | 1999 |
| Latest Tax Year [Member] | |
| Open Tax Year | 2014 |
| Unrecognized Tax Benefits | $ 0 |
| Unrecognized Tax Benefits, Interest on Income Taxes Accrued | $ 0 |