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Employee Benefit Plans (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022
Defined Contribution Plan Disclosure [Line Items] |  |  |
Matching contributions, amount | $ 3.7 | $ 3.4 | $ 3.1
Defined contribution plan |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Maximum annual contribution per employee percentage | 25.00% |  |
Defined contribution plan | Full Employer Match |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Employers percent of matching contributions | 100.00% |  |
Percent of employees' gross pay for employer match | 3.00% |  |
Defined contribution plan | Half Employer Match |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Employers percent of matching contributions | 50.00% |  |
Percent of employees' gross pay for employer match | 2.00% |  |

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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480794/715-70-50-1 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480794/715-70-50-1 + Details
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details
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- Definition Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan. + References No definition available. + Details
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- Details
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- Details
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- Details
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