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Share-Based Compensation - Narrative (Details) $ / shares in Units, $ in Millions | 12 Months Ended |
--- | --- | ---
Jun. 30, 2024 USD ($) plan $ / shares shares | Jun. 30, 2023 USD ($) $ / shares shares | Jun. 30, 2022 USD ($) $ / shares shares | Jun. 30, 2021 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of share-based compensation plans (plan) | plan | 2 |  |  |
Compensation cost | $ 19.8 | $ 16.4 | $ 10.8 |
Stock options |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Compensation cost | $ 0.4 | $ 0.5 | $ 0.6 |
Weighted average grant date fair value (in dollars per share) | $ / shares | $ 34.06 | $ 15.55 | $ 12.39 |
Unvested stock option cost | $ 0.1 |  |  |
Stock option weighted average remaining life | 3 months 18 days |  |  |
Options outstanding (in shares) | shares | 613,586 | 1,808,174 | 1,962,589 | 2,075,753
Stock options | Minimum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Shares vesting period | 1 year |  |  |
Stock options | Maximum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Shares vesting period | 3 years |  |  |
Expiration term | 10 years |  |  |
Performance Shares |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Compensation cost | $ 8.3 | $ 6.1 | $ 1.1 |
Performance Shares | Minimum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Target shares awarded percentage | 0.00% |  |  |
Performance Shares | Maximum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Target shares awarded percentage | 200.00% |  |  |
Omnibus Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Shares available for grant (in shares) | shares | 3,419,252 |  |  |
Omnibus Plan | Stock options |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options outstanding (in shares) | shares | 384,642 |  |  |
Omnibus Plan | Time-based restricted stock unit awards | Minimum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Shares vesting period | 1 year |  |  |
Omnibus Plan | Time-based restricted stock unit awards | Maximum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Shares vesting period | 3 years |  |  |
Omnibus Plan | Restricted stock unit awards |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Compensation cost | $ 9.8 | 8.6 | 8.0 |
Unvested stock option cost | $ 7.6 |  |  |
Stock option weighted average remaining life | 1 year 6 months |  |  |
Director's Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Compensation cost | $ 1.3 | $ 1.2 | $ 1.1 |
Shares available for grant (in shares) | shares | 171,911 |  |  |
Shares vesting period | 1 year |  |  |
Unvested stock option cost | $ 0.3 |  |  |
Stock option weighted average remaining life | 3 months 18 days |  |  |
Percentage of Director's annual retainer paid in stock instead of cash | 50.00% |  |  |
Percentage of Director's committee chair fees paid in stock instead of cash | 100.00% |  |  |
Director's Plan | Every Three Months |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Percentage of shares vesting following grant date | 25.00% |  |  |
Director's Plan | 1/4 of the units |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock vesting period with reference to service term | 3 months |  |  |
Director's Plan | Minimum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Percentage of Director's annual retainer paid in stock instead of cash | 50.00% |  |  |
Director's Plan | Stock options |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options outstanding (in shares) | shares | 228,944 |  |  |

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