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Incentive Plans (Tables) | 12 Months Ended
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Jun. 30, 2024
Incentive Plans |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions | ​
​ | ​ | ​ | ​ | ​ | ​
​ |  | Fiscal 2024 |  | Fiscal 2023 |
Expected volatility |  | 21.6% - 22.9 | % | 20.3 | %
Weighted average volatility |  | 22.5 | % | 20.3 | %
Expected dividend yield |  | 4.5 | % | 3.9 | %
Expected term (in years) |  | 7.4 |  | 7.3 |
Risk-free interest rate |  | 4.3 | % | 2.9 | %
Schedule of stock option activity | The following tables summarize the stock option activity in the Plans during the fiscal years ended June 30, 2024 and 2023: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | ​ | ​ |  | Weighted |  | ​ | ​
​ | ​ | ​ | ​ | Weighted | ​ | Average | ​ | Aggregate
​ | ​ | ​ | ​ | Average | ​ | Remaining | ​ | Intrinsic
​ | ​ | ​ | ​ | Exercise | ​ | Contractual | ​ | Value
Options | ​ | Shares | ​ | Price | ​ | Term (Years) | ​ | ($000)
Outstanding at June 30, 2022 |  | 431,000 | ​ | $ | 16.24 |  |  | ​ |  |
Granted |  | 30,000 | ​ | $ | 14.52 |  |  | ​ |  |
Exercised |  | — | ​ | $ | — |  |  | ​ |  |
Forfeited |  | (7,500) | ​ | $ | 20.19 |  |  | ​ |  |
Expired | ​ | (19,000) | ​ | $ | 16.47 | ​ | ​ | ​ | ​ | ​
Outstanding at June 30, 2023 |  | 434,500 | ​ | $ | 16.04 |  | 3.01 | ​ | $ | —
Vested and expected to vest at June 30, 2023 |  | 425,700 | ​ | $ | 16.06 |  | 2.89 | ​ | $ | —
Exercisable at June 30, 2023 |  | 390,500 | ​ | $ | 16.13 |  | 2.34 | ​ | $ | —
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Outstanding at June 30, 2023 |  | 434,500 | ​ | $ | 16.04 |  |  | ​ |  |
Granted |  | 98,000 | ​ | $ | 12.44 |  |  | ​ |  |
Exercised |  | — | ​ | $ | — |  |  | ​ |  |
Forfeited |  | (5,000) | ​ | $ | 14.52 |  |  | ​ |  |
Expired | ​ | (47,500) | ​ | $ | 15.71 | ​ | ​ | ​ | ​ | ​
Outstanding at June 30, 2024 |  | 480,000 | ​ | $ | 15.35 |  | 3.29 | ​ | $ | —
Vested and expected to vest at June 30, 2024 |  | 475,950 | ​ | $ | 16.36 |  | 3.25 | ​ | $ | —
Exercisable at June 30, 2024 |  | 355,000 | ​ | $ | 16.18 |  | 1.14 | ​ | $ | —
Schedule of Share-based Compensation, Unvested Restricted Stock Units Award Activity | ​ The following table summarizes the restricted stock activity for the fiscal years ended June 30, 2024 and 2023: ​
​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | Weighted Average
​ | ​ | ​ | ​ | Award Date
Unvested Shares | ​ | Shares | Fair Value
Unvested at June 30, 2022 |  | 94,750 | ​ | $ | 18.57
Awarded |  | 53,000 | ​ | $ | 12.95
Vested |  | (93,750) | ​ | $ | 18.57
Forfeited |  | (3,000) | ​ | $ | 14.82
Unvested at June 30, 2023 |  | 51,000 | ​ | $ | 12.95
Expected to vest at June 30, 2023 |  | 40,800 | ​ | $ | 12.95
​ | ​ | ​ | ​ | ​ | ​
Unvested at June 30, 2023 |  | 51,000 | ​ | $ | 12.95
Awarded |  | 131,000 | ​ | $ | 11.08
Vested |  | (2,000) | ​ | $ | 12.09
Forfeited |  | (3,350) | ​ | $ | 12.95
Unvested at June 30, 2024 |  | 176,650 | ​ | $ | 11.57
Expected to vest at June 30, 2024 |  | 150,153 | ​ | $ | 11.57

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