Note 8 - Restricted Stock Activity Granted to Employees (Details) - Restricted Stock [Member] - $ / shares |
12 Months Ended | |
|---|---|---|
Jun. 30, 2016 |
Jun. 30, 2015 |
|
| Balance, Number of Shares, (in shares) | 72,589 | 40,190 |
| Balance, Weighted Average Grant Date Fair Value, (in dollars per share) | $ 22.40 | $ 38 |
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | 10,000 | 54,850 |
| Granted,. Weighted Average Grant Date Fair Value (in dollars per share) | $ 2.98 | $ 16.60 |
| Vested, Number of Shares (in shares) | (6,120) | (18,828) |
| Vested, Weighted Average Grant Date Fair Value (in dollars per share) | $ 28.94 | $ 36.40 |
| Forfeited, Number of Shares (in shares) | (12,903) | (3,623) |
| Forfeited, Weighted Average Grant Date Fair Value (in dollars per share) | $ 41.15 | $ 35.40 |
| Outstanding, Number of Shares, (in shares) | 63,566 | 72,589 |
| Outstanding, Weighted Average Grant Date Fair Value, (in dollars per share) | $ 14.96 | $ 22.40 |