Stock-Based Compensation - Time-Based Restricted Stock Unit Grants (Details) - Restricted Stock, Time Based Shares	9 Months Ended
Jun. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	3 years
Award vesting percentage (as a percent)	33.33%

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.

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+ Details