Commitments and Contingencies (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Commitments and Contingencies
Letters of credit outstanding, amount	$ 8.0	$ 8.5

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

No definition available.

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant