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Note 10 - Equity Compensation (Tables) | 12 Months Ended
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Jun. 30, 2021
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] |
|  | 2021 |  |  | 2020 |
Dividend yield |  |  | 2.9 | % |  |  | 4.7 | %
Expected volatility |  |  | 50 | % |  |  | 43 | %
Risk-free interest rate |  |  | 0.3 | % |  |  | 1.4 | %
Expected life (in years) |  |  | 6.0 |  |  |  | 6.0 |
Fair value per share |  | $ | 2.40 |  |  | $ | 1.22 |
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, 2020 |  |  | 2,282,938 |  |  | $ | 6.20 |  |  |  | 7.1 |  |  | $ | 2,731,949 |
Granted |  |  | 318,406 |  |  | $ | 6.86 |  |  |  |  |  |  |  |  |
Exercised |  |  | (139,367 | ) |  | $ | 7.38 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (132,329 | ) |  | $ | 8.84 |  |  |  |  |  |  |  |  |
Expired |  |  | (2,500 | ) |  | $ | 7.29 |  |  |  |  |  |  |  |  |
Outstanding at June 30, 2021 |  |  | 2,327,148 |  |  | $ | 6.07 |  |  |  | 6.7 |  |  | $ | 5,320,456 |
Exercisable at June 30, 2021 |  |  | 1,013,157 |  |  | $ | 7.58 |  |  |  | 5.0 |  |  | $ | 1,239,663 |
Vested and expected to vest at June 30, 2021 |  |  | 2,256,565 |  |  | $ | 6.08 |  |  |  | 6.6 |  |  | $ | 5,165,389 |
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, 2020 |  |  | 72,820 |  |  | $ | 4.03 |
Granted |  |  | 163,752 |  |  | $ | 7.08 |
Vested |  |  | (28,051 | ) |  | $ | 4.34 |
Forfeited |  |  | (7,800 | ) |  | $ | 5.49 |
Unvested at June 30, 2021 |  |  | 200,721 |  |  | $ | 6.42 |
Share-based Payment Arrangement, Performance Stock Units, Activity [Table Text Block] |
|  | Shares |  |  | Weighted- Average Grant Date Fair Value |
Unvested at June 30, 2020 |  |  | 206,974 |  |  | $ | 3.98 |
Granted |  |  | 256,526 |  |  | $ | 7.50 |
Vested |  |  | - |  |  | $ | - |
Forfeited |  |  | (6,613 | ) |  | $ | 4.48 |
Unvested at June 30, 2021 |  |  | 456,887 |  |  | $ | 5.95 |

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