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Earnings Per Share - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Oct. 20, 2024 | Jul. 31, 2024 | Jun. 30, 2019 | Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Mar. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Contingently issuable common shares were excluded (in shares) |  |  |  |  | 168,000 |  | 168,000 |
Treasury stock purchase (in shares) |  |  |  | 143,734 |  |  |  |
Repurchase of treasury shares |  |  |  | $ 4,945 |  |  |  |
Dividends declared per common share (in dollars per share) |  |  |  | $ 0.07 | $ 0.07 | $ 0.07 | $ 0.07 |
Subsequent Event |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Dividends declared per common share (in dollars per share) | $ 0.07 |  |  |  |  |  |  |
Dividends | $ 2,025 |  |  |  |  |  |  |
Restricted Stock Units (RSUs) |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Shares vested (in shares) |  |  |  |  |  |  |  | 146,000
2016 LTIP |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Additional shares authorized for grant (in shares) |  | 2,800,000 | 2,500,000 |  |  |  |  |
Stock issued upon the exercise of stock option (in shares) |  |  |  |  |  | 3,000 |  |
Stock Options |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Antidilutive securities excluded from computation of earnings per share (in shares) |  |  |  | 1,790,000 | 748,000 | 1,790,000 |  |
Restricted Stock Units (RSUs) |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Antidilutive securities excluded from computation of earnings per share (in shares) |  |  |  | 1,790,000 |  | 1,790,000 |  |
Performance Shares |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Antidilutive securities excluded from computation of earnings per share (in shares) |  |  |  | 1,790,000 |  | 1,790,000 |  |

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