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STOCK COMPENSATION - Effects to Net Income (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2023
Share-Based Payment Arrangement [Abstract] |  |  |
Tax effects of employee's stock-based compensation expense recognized income | $ 1,651 | $ 1,873 | $ 1,838
Total employee stock-based compensation expense recognized in income, net of tax effects of $1,651, $1,873, and $1,838, respectively | $ 7,856 | $ 8,416 | $ 8,465

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- Definition Amount of tax benefit for recognition of expense of award under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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