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The 401(k) Benefit Plan | 12 Months Ended
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Sep. 30, 2021
Retirement Benefits [Abstract] |
401(k) Benefit Plan | 401(k) Benefit PlanThe Company has a retirement plan (the Plan), which is intended to be a qualified plan under Section 401(k) of the Internal Revenue Code. The Plan is a defined contribution plan available to all eligible employees and allows participants to contribute up to the legal maximum of their eligible compensation, not to exceed the maximum tax-deferred amount allowed by the Internal Revenue Service. The Plan also allows the Company to make discretionary matching contributions. During the year ended September 30, 2020, the Company changed its employer contributions from a safe harbor matching program to be fully discretionary where employer contributions may be provided to participants based upon the Company's financial performance and metrics at the end of its fiscal and calendar years. For the years ended September 30, 2021, 2020, and 2019, the Company recorded expenses of $1.1 million, $0.9 million and $1.6 million, respectively, related to its contributions to the Plan.

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