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Stock Options (Tables) | 12 Months Ended
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Jun. 30, 2025
2012 Employee Stock Option Plan |
Stock Options |
Schedule of fair value and valuation assumptions | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2025 |  | 2024 | ​ | 2023 |
Risk-free interest rates | ​ | n/a | ​ | n/a | ​ | 3.03 | %
Expected lives | ​ | n/a | ​ | n/a | ​ | 7.27 Years | ​
Expected volatility | ​ | n/a | ​ | n/a | ​ | 43 | %
Expected dividend yields | ​ | n/a | ​ | n/a | ​ | 0 | %
Schedule of plan activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2025 | ​ | 2024 | ​ | 2023
​ | ​ | ​ | ​ | ​ | Weighted average | ​ | ​ | ​ | ​ | Weighted average | ​ | ​ | ​ | ​ | Weighted average
​ |  | Options |  | exercise price |  | Options |  | exercise price |  | Options |  | exercise price
Outstanding, beginning of year | ​ | ​ | 363,036 | ​ | $ | 21.47 | ​ | ​ | 521,580 | ​ | $ | 19.37 | ​ | ​ | 523,080 | ​ | $ | 18.59
Granted | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 37,500 | ​ | $ | 26.94
Forfeited/Lapsed | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (11,000) | ​ | $ | (3.16) | ​ | ​ | — | ​ | ​ | -
Exercised | ​ | ​ | (2,000) |  | $ | (26.94) | ​ |  | (147,544) |  | $ | (15.43) | ​ |  | (39,000) |  | $ | (10.44)
Outstanding, end of period | ​ | ​ | 361,036 | ​ | $ | 21.44 | ​ |  | 363,036 | ​ | $ | 21.47 | ​ |  | 521,580 | ​ | $ | 19.37
Exercisable, end of period | ​ | ​ | 277,636 | ​ | $ | 20.87 | ​ |  | 190,960 | ​ | $ | 20.87 | ​ |  | 247,628 | ​ | $ | 17.16
Weighted average fair value at grant date of options granted | ​ | ​ | n/a | ​ |  | ​ | ​ | ​ | n/a | ​ |  | ​ | ​ | $ | 13.36 | ​ |  | ​
Total intrinsic value of options exercised | ​ | $ | 35,000 | ​ | ​ | ​ | ​ | $ | 3,972,000 | ​ |  | ​ | ​ | $ | 822,000 | ​ |  | ​
Total intrinsic value of options outstanding | ​ | $ | 2,980,000 | ​ | ​ | ​ | ​ | $ | 11,067,000 | ​ |  | ​ | ​ | $ | 7,968,000 | ​ |  | ​
Total intrinsic value of options exercisable | ​ | $ | 2,448,000 | ​ | ​ | ​ | ​ | $ | 5,936,000 | ​ |  | ​ | ​ | $ | 4,330,000 | ​ |  | ​
Schedule of options outstanding | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Options outstanding | ​ | Options exercisable
​ |  | ​ |  | Weighted average |  | ​ | ​ |  | ​ |  | ​ | ​
​ | ​ | Number | ​ | remaining | ​ | Weighted average | ​ | Number | ​ | Weighted average
Range of exercise prices | ​ | outstanding | ​ | contractual life | ​ | exercise price | ​ | exercisable | ​ | exercise price
$10.02 ‑ $26.94 | ​ | 361,036 | ​ | 6.15 | ​ | $ | 21.44 | ​ | 277,636 | ​ | $ | 20.87
​ | ​ | 361,036 | ​ | 6.15 | ​ | $ | 21.44 | ​ | 277,636 | ​ | $ | 20.87
2012 Non-Employee Stock Option Plan |
Stock Options |
Schedule of plan activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2025 | ​ | 2024 | ​ | 2023
​ |  | ​ | ​ |  | Weighted average |  | ​ | ​ |  | Weighted average |  | ​ | ​ |  | Weighted average
​ | ​ | Options | ​ | exercise price | ​ | Options | ​ | exercise price | ​ | Options | ​ | exercise price
Outstanding, beginning of year | ​ | ​ | 20,400 | ​ | $ | 14.39 | ​ | ​ | 20,400 | ​ | $ | 14.39 | ​ | ​ | 20,400 | ​ | $ | 14.39
Forfeited/Lapsed | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Exercised | ​ | ​ | — | ​ | ​ | — | ​ |  | — | ​ | ​ | — | ​ |  | — |  | ​ | —
Outstanding, end of period | ​ | ​ | 20,400 | ​ | $ | 14.39 | ​ |  | 20,400 | ​ | $ | 14.39 | ​ |  | 20,400 | ​ | $ | 14.39
Exercisable, end of period | ​ | ​ | 18,480 | ​ | $ | 13.50 | ​ |  | 16,560 | ​ | $ | 12.41 | ​ |  | 13,920 | ​ | $ | 10.99
Weighted average fair value at grant date of options granted | ​ | ​ | n/a | ​ | ​ | ​ | ​ | ​ | n/a | ​ |  |  | ​ | ​ | n/a | ​ |  |
Total intrinsic value of options exercised | ​ | ​ | n/a | ​ | ​ | ​ | ​ | ​ | n/a | ​ |  |  | ​ | ​ | n/a | ​ |  |
Total intrinsic value of options outstanding | ​ | $ | 312,000 | ​ | ​ | ​ | ​ | $ | 766,000 | ​ |  |  | ​ | $ | 413,000 | ​ |  |
Total intrinsic value of options exercisable | ​ | $ | 299,000 | ​ | ​ | ​ | ​ | $ | 655,000 | ​ |  |  | ​ | $ | 329,000 | ​ |  |
Schedule of options outstanding | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Options outstanding | ​ | Options exercisable
​ | ​ | ​ | ​ | Weighted average | ​ | Weighted | ​ | ​ | ​ | Weighted
​ | ​ | Number | ​ | remaining | ​ | average exercise | ​ | Number | ​ | average exercise
Range of exercise prices | ​ | outstanding |  | contractual life | ​ | price |  | exercisable | ​ | price
$4.35 - $22.93 | ​ | 20,400 | ​ | 4.65 | ​ | $ | 14.39 | ​ | 18,480 | ​ | $ | 13.50
​ | ​ | 20,400 | ​ | 4.65 | ​ | $ | 14.39 | ​ | 18,480 | ​ | $ | 13.50
2018 Non-Employee Stock Option Plan |
Stock Options |
Schedule of plan activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2025 | ​ | 2024 | ​ | 2023
​ |  | ​ | ​ |  | Weighted average |  | ​ | ​ |  | Weighted average |  | ​ | ​ |  | Weighted average
​ | ​ | Options |  | exercise price | ​ | Options |  | exercise price | ​ | Options |  | exercise price
Outstanding, beginning of year | ​ | ​ | 68,900 | ​ | $ | 14.54 | ​ | ​ | 75,000 | ​ | $ | 14.83 | ​ | ​ | 89,000 | ​ | $ | 14.91
Forfeited/Lapsed | ​ | ​ | (4,000) |  | $ | (22.93) | ​ |  | — |  | ​ | — | ​ |  | — |  | ​ | —
Exercised | ​ | ​ | — |  | ​ | ​ | ​ |  | (6,100) |  | $ | (18.15) | ​ |  | (14,000) |  | $ | (15.32)
Outstanding, end of period | ​ | ​ | 64,900 | ​ | $ | 14.02 | ​ |  | 68,900 | ​ | $ | 14.54 | ​ |  | 75,000 | ​ | $ | 14.83
Exercisable, end of period | ​ | ​ | 62,200 | ​ | $ | 13.63 | ​ |  | 59,500 | ​ | $ | 13.21 | ​ |  | 50,720 | ​ | $ | 12.87
Weighted average fair value at grant date of options granted | ​ | ​ | n/a | ​ | ​ | ​ | ​ | ​ | n/a | ​ | ​ | ​ | ​ | ​ | n/a | ​ | ​ | ​
Total intrinsic value of options exercised | ​ | ​ | n/a | ​ | ​ | ​ | ​ | $ | 141,000 | ​ | ​ | ​ | ​ | $ | 209,000 | ​ | ​ | ​
Total intrinsic value of options outstanding | ​ | $ | 1,017,000 | ​ | ​ | ​ | ​ | $ | 2,578,000 | ​ | ​ | ​ | ​ | $ | 1,486,000 | ​ | ​ | ​
Total intrinsic value of options exercisable | ​ | $ | 999,000 | ​ | ​ | ​ | ​ | $ | 2,305,000 | ​ | ​ | ​ | ​ | $ | 1,104,000 | ​ | ​ | ​
Schedule of options outstanding | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Options outstanding | ​ | Options exercisable
​ |  | ​ |  | Weighted average |  | Weighted |  | ​ |  | Weighted
​ | ​ | Number | ​ | remaining | ​ | average exercise | ​ | Number | ​ | average exercise
Range of exercise prices | ​ | outstanding | ​ | contractual life | ​ | price | ​ | exercisable | ​ | price
$8.10 - $22.93 | ​ | 64,900 |  | 4.61 | ​ | $ | 14.02 |  | 62,200 | ​ | $ | 13.63
​ | ​ | 64,900 |  | 4.61 | ​ | $ | 14.02 |  | 62,200 | ​ | $ | 13.63
2020 Non-Employee Stock Option Plan |
Stock Options |
Schedule of fair value and valuation assumptions | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2025 |  | 2024 |  | 2023 |
Risk-free interest rates |  | n/a | ​ | n/a | ​ | 3.03 - 3.40 | %
Expected lives |  | n/a | ​ | n/a | ​ | 7.23 - 7.27 Years | ​
Expected volatility |  | n/a | ​ | n/a | ​ | 43 | %
Expected dividend yields |  | n/a | ​ | n/a | ​ | 0 | %
Schedule of plan activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2025 | ​ | 2024 | ​ | 2023
​ | ​ | ​ | ​ | ​ | Weighted average | ​ | ​ | ​ | ​ | Weighted average | ​ | ​ | ​ | ​ | Weighted average
​ |  | Options |  | exercise price |  | Options |  | exercise price |  | Options |  | exercise price
Outstanding, beginning of year |  | ​ | 56,900 |  | $ | 23.35 | ​ | ​ | 56,900 |  | $ | 23.35 | ​ | ​ | 26,900 |  | $ | 18.64
Granted |  | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 30,000 | ​ | $ | 27.57
Forfeited/Lapsed | ​ | ​ | (2,000) | ​ | $ | (26.94) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Exercised |  | ​ | (3,000) | ​ | $ | (26.94) | ​ | ​ | — | ​ |  | — | ​ | ​ | — | ​ |  | —
Outstanding, end of period |  | ​ | 51,900 | ​ | $ | 23.00 | ​ | ​ | 56,900 | ​ | $ | 23.35 | ​ | ​ | 56,900 | ​ | $ | 23.35
Exercisable, end of period |  | ​ | 38,520 | ​ | $ | 21.79 | ​ | ​ | 30,140 | ​ | $ | 21.72 | ​ | ​ | 18,760 | ​ | $ | 20.73
Weighted average fair value at grant date of options granted | ​ | ​ | n/a | ​ |  |  | ​ | ​ | n/a | ​ |  | ​ | ​ | $ | 13.74 | ​ |  | ​
Total intrinsic value of options exercised | ​ | $ | 32,000 | ​ |  |  | ​ |  | n/a | ​ |  | ​ | ​ |  | n/a | ​ |  | ​
Total intrinsic value of options outstanding | ​ | $ | 352,000 | ​ |  |  | ​ | $ | 1,627,000 | ​ |  | ​ | ​ | $ | 643,000 | ​ |  | ​
Total intrinsic value of options exercisable | ​ | $ | 307,000 | ​ |  |  | ​ | $ | 911,000 | ​ |  | ​ | ​ | $ | 261,000 | ​ |  | ​
Schedule of options outstanding | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Options outstanding | ​ | Options exercisable
​ | ​ | ​ | ​ | Weighted average | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Number | ​ | remaining | ​ | Weighted average | ​ | Number | ​ | Weighted average
Range of exercise prices |  | outstanding |  | contractual life |  | exercise price |  | exercisable |  | exercise price
$11.40 - $30.71 |  | 51,900 |  | 6.54 | ​ | $ | 23.00 |  | 38,520 | ​ | $ | 21.79
​ |  | 51,900 |  | 6.54 | ​ | $ | 23.00 |  | 38,520 | ​ | $ | 21.79
2022 Employee Stock Option Plan |
Stock Options |
Schedule of fair value and valuation assumptions | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2025 |  | 2024 |  | 2023 |
Risk-free interest rates |  | n/a | ​ | 4.42 - 4.62 | % | 3.84 | %
Expected lives |  | n/a | ​ | 5.63 - 5.87 Years | ​ | 7.28 Years | ​
Expected volatility |  | n/a | ​ | 56 | % | 45 | %
Expected dividend yields |  | n/a | ​ | .76 - 1.01 | % | 0.62 | %
Schedule of plan activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2025 | ​ | 2024 | ​ | 2023
​ | ​ | ​ | ​ | ​ | Weighted average | ​ | ​ | ​ | ​ | Weighted average | ​ | ​ | ​ | ​ | Weighted average
​ |  | Options |  | exercise price | ​ | Options |  | exercise price | ​ | Options |  | exercise price
Outstanding, beginning of year |  | ​ | 130,000 |  | $ | 41.38 | ​ | ​ | 5,000 |  | $ | 40.01 | ​ | ​ | — |  | ​ | —
Granted |  | ​ | — | ​ | ​ | — | ​ | ​ | 130,000 | ​ | $ | 41.38 | ​ | ​ | 5,000 | ​ | $ | 40.01
Forfeited/Lapsed | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (5,000) | ​ | $ | (40.01) | ​ | ​ | — | ​ | ​ | —
Outstanding, end of period |  | ​ | 130,000 | ​ | $ | 41.38 | ​ | ​ | 130,000 | ​ | $ | 41.38 | ​ | ​ | 5,000 | ​ | $ | 40.01
Exercisable, end of period |  | ​ | 52,000 | ​ | $ | 41.38 | ​ | ​ | 26,000 | ​ | $ | 41.38 | ​ | ​ | 1,000 | ​ | $ | 40.01
Weighted average fair value at grant date of options granted | ​ | ​ | n/a | ​ |  |  | ​ | $ | 21.29 | ​ |  | ​ | ​ | $ | 19.77 | ​ |  | ​
Total intrinsic value of options exercised | ​ |  | n/a | ​ |  |  | ​ |  | n/a | ​ |  | ​ | ​ |  | n/a | ​ |  | ​
Total intrinsic value of options outstanding | ​ | $ | 81,000 | ​ |  |  | ​ | $ | 1,375,000 | ​ |  | ​ | ​ | $ | — | ​ |  | ​
Total intrinsic value of options exercisable | ​ | $ | 32,000 | ​ |  |  | ​ | $ | 275,000 | ​ |  | ​ | ​ | $ | — | ​ |  | ​
Schedule of options outstanding | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Options outstanding | ​ | Options exercisable
​ | ​ | ​ | ​ | Weighted average | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Number | ​ | remaining | ​ | Weighted average | ​ | Number | ​ | Weighted average
Range of exercise prices |  | outstanding |  | contractual life |  | exercise price |  | exercisable |  | exercise price
$21.60 - $49.39 |  | 130,000 |  | 8.81 | ​ | $ | 41.38 |  | 52,000 | ​ | $ | 41.38
​ |  | 130,000 |  | 8.81 | ​ | $ | 41.38 |  | 52,000 | ​ | $ | 41.38

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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Line items represent financial concepts included in a table. 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