Note 8 - Fair Value of Stock Options Granted (Details) |
12 Months Ended | |
|---|---|---|
Jun. 30, 2016 |
Jun. 30, 2015 |
|
| Fair Value Assumptions, Expected Term | 5 years | 5 years |
| Risk-free interest rate | 1.50% | 1.50% |
| Fair Value Assumptions, Expected Volatility Rate | 80.00% | 75.00% |
| Fair Value Assumptions, Expected Dividend Rate | 0.00% | 0.00% |