Commitments and Contingencies - Additional Information (Details) $ in Millions	9 Months Ended
Jun. 30, 2021 USD ($)
Other Commitments [Line Items]
Purchase obligation	$ 11.1
Minimum
Other Commitments [Line Items]
Severance payment term	12 months
Maximum
Other Commitments [Line Items]
Severance payment term	36 months

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.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration