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Note 9 - Equity Compensation (Tables) | 12 Months Ended
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Jun. 30, 2020
Notes Tables |
Stock Warrants, Valuation Assumptions [Table Text Block] |
|  | February 21, 2017 |
Dividend yield |  |  | 2.01 | %
Expected volatility |  |  | 39 | %
Risk-free interest rate |  |  | 1.80 | %
Expected life (in years) |  |  | 4.5 |
Fair value per share |  | $ | 2.87 |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | 2020 |  |  | 2019 |
Dividend yield |  |  | 4.7 | % |  |  | 4.6 | %
Expected volatility |  |  | 43 | % |  |  | 42 | %
Risk-free interest rate |  |  | 1.4 | % |  |  | 2.8 | %
Expected life (in years) |  |  | 6.0 |  |  |  | 4.9 |
Fair value per share |  | $ | 1.22 |  |  | $ | 1.48 |
Share-based Payment Arrangement, Option, Activity [Table Text Block] |
|  | Shares |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Term (in years) |  |  | Aggregate Intrinsic Value |
Outstanding at June 30, 2019 |  |  | 2,749,626 |  |  | $ | 7.23 |  |  |  | 6.8 |  |  | $ | 23,500 |
Granted |  |  | 735,429 |  |  | $ | 4.51 |  |  |  |  |  |  |  |  |
Exercised |  |  | (143,766 | ) |  | $ | 5.57 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (889,351 | ) |  | $ | 7.69 |  |  |  |  |  |  |  |  |
Expired |  |  | (169,000 | ) |  | $ | 8.24 |  |  |  |  |  |  |  |  |
Outstanding at June 30, 2020 |  |  | 2,282,938 |  |  | $ | 6.20 |  |  |  | 7.1 |  |  | $ | 2,731,949 |
Exercisable at June 30, 2020 |  |  | 1,017,148 |  |  | $ | 8.35 |  |  |  | 5.1 |  |  | $ | 100,719 |
Vested and expected to vest at June 30, 2020 |  |  | 2,206,744 |  |  | $ | 6.26 |  |  |  | 7.0 |  |  | $ | 2,574,232 |
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] |
|  | Shares |  |  | Weighted- Average Grant Date Fair Value |
Unvested at June 30, 2019 |  |  | 33,042 |  |  | $ | 7.72 |
Granted |  |  | 81,917 |  |  | $ | 3.83 |
Vested |  |  | (21,126 | ) |  | $ | 8.06 |
Forfeited |  |  | (21,013 | ) |  | $ | 5.00 |
Unvested at June 30, 2020 |  |  | 72,820 |  |  | $ | 4.03 |
Share-based Payment Arrangement, Performance Stock Units, Activity [Table Text Block] |
|  | Shares |  |  | Weighted- Average Grant Date Fair Value |
Unvested at June 30, 2019 |  |  | 56,550 |  |  | $ | 4.94 |
Granted |  |  | 199,310 |  |  | $ | 3.83 |
Vested |  |  | - |  |  | $ | - |
Forfeited |  |  | (48,886 | ) |  | $ | 4.49 |
Unvested at June 30, 2020 |  |  | 206,974 |  |  | $ | 3.98 |

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