Stock-Based Compensation - Restricted Stock Unit Activity - Unrecognized Compensation Cost (Details) - Restricted Stock Units (RSUs) $ in Millions	6 Months Ended
Mar. 31, 2024 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 27.2
Unrecognized compensation cost, estimated weighted average amortization period	1 year 10 months 24 days

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