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STOCKHOLDERS' EQUITY (Tables) | 12 Months Ended
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Jun. 30, 2024
STOCKHOLDERS' EQUITY |
Schedule of stock-based compensation expense in the consolidated statements of operations | We recorded stock-based compensation expense in the consolidated statements of operations as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2022 |  | 2023 |  | 2024
Cost of goods sold | ​ | $ | 812 | ​ | $ | 911 | ​ | $ | 930
Selling, general and administrative | ​ |  | 26,749 | ​ | ​ | 27,716 | ​ | ​ | 27,155
Research and development | ​ |  | 511 | ​ | ​ | 497 | ​ | ​ | 621
Stock-based compensation expense | ​ | $ | 28,072 | ​ | $ | 29,124 | ​ | $ | 28,706
Schedule of weighted average assumptions used to determine the fair value calculations for stock options issued | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2022 |  | 2023 |  | 2024 |
Expected dividend |  | — | ​ | — | ​ | — | ​
Risk-free interest rate |  | 1.2 | % | 3.9 | % | 4.5 | %
Expected volatility |  | 31.0 | % | 31.0 | % | 29.0 | %
Expected holding period (in years) |  | 4.5 | ​ | 4.5 | ​ | 4.5 | ​
Schedule of stock option activity | The following summarizes stock option activity for fiscal years 2022, 2023 and 2024: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted- | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Average | ​ | Weighted-Average | ​ | Aggregate
​ | ​ | Number of | ​ | Exercise | ​ | Remaining Contractual | ​ | Intrinsic Value
​ |  | Options |  | Price |  | Term |  | (in thousands)
Outstanding at June 30, 2021 |  | 255,220 | ​ | $ | 50.24 | ​ | ​ | ​ | ​ | ​
Granted |  | 22,954 | ​ | ​ | 96.38 | ​ | ​ | ​ | ​ | ​
Exercised |  | (166,629) | ​ | ​ | 35.09 | ​ | ​ | ​ | ​ | ​
Expired or forfeited |  | (900) | ​ | ​ | 73.99 | ​ | ​ | ​ | ​ | ​
Outstanding at June 30, 2022 |  | 110,645 | ​ | $ | 82.43 | ​ | ​ | ​ | ​ | ​
Granted |  | 23,351 | ​ | ​ | 87.90 | ​ | ​ | ​ | ​ | ​
Exercised |  | (47,354) | ​ | ​ | 77.42 | ​ | ​ | ​ | ​ | ​
Expired or forfeited |  | (2,965) | ​ | ​ | 74.06 | ​ | ​ | ​ | ​ | ​
Outstanding at June 30, 2023 |  | 83,677 | ​ | $ | 87.09 | ​ | ​ | ​ | ​ | ​
Granted |  | 22,438 | ​ | ​ | 119.45 | ​ | ​ | ​ | ​ | ​
Exercised |  | (22,698) | ​ | ​ | 81.67 | ​ | ​ | ​ | ​ | ​
Expired or forfeited |  | (4,459) | ​ | ​ | 86.72 | ​ | ​ | ​ | ​ | ​
Outstanding at June 30, 2024 |  | 78,958 | ​ | $ | 97.87 | ​ | 7.6 years | ​ | $ | 3.131
Exercisable at June 30, 2024 | ​ | 34,647 | ​ | $ | 88.53 | ​ | 6.1 years | ​ | $ | 1.698
Summary of RSU award activity | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted-
​ | ​ | ​ | ​ | Average
​ |  | Shares |  | Fair Value
Nonvested at June 30, 2021 |  | 435,925 | ​ | $ | 84.16
Granted |  | 334,435 | ​ | ​ | 90.31
Vested |  | (337,442) | ​ | ​ | 82.66
Forfeited |  | (5,471) | ​ | ​ | 83.66
Nonvested at June 30, 2022 |  | 427,447 | ​ | $ | 90.17
Granted |  | 357,475 | ​ | ​ | 87.90
Vested |  | (313,862) | ​ | ​ | 96.36
Forfeited |  | (15,545) | ​ | ​ | 88.42
Nonvested at June 30, 2023 |  | 455,515 | ​ | $ | 85.15
Granted |  | 333,114 | ​ | ​ | 95.42
Vested |  | (390,375) | ​ | ​ | 79.75
Forfeited |  | (6,663) | ​ | ​ | 88.76
Nonvested at June 30, 2024 |  | 391,591 | ​ | $ | 99.21

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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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